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diff --git a/_images/not-everything-is-flowers.png b/_images/not-everything-is-flowers.png
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diff --git a/_images/os2-irc.png b/_images/os2-irc.png
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diff --git a/_images/os2.jpg b/_images/os2.jpg
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diff --git a/_images/presenter.jpg b/_images/presenter.jpg
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diff --git a/_images/taquara-portoalegre.png b/_images/taquara-portoalegre.png
new file mode 100644
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diff --git a/_images/things-change.jpg b/_images/things-change.jpg
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diff --git a/algo-ganho-algo-perdido.html b/algo-ganho-algo-perdido.html
index 9185042..243f90c 100644
--- a/algo-ganho-algo-perdido.html
+++ b/algo-ganho-algo-perdido.html
@@ -143,6 +143,18 @@
                     <p class="fragment">... até 2020</p>
                 </section>
 
+                <section>
+                    <img src="_images/rust-in-poa.jpg" class="stretch"/>
+                    <!-- Rust in poa -->
+                </section>
+
+                <section>
+                    <img src="_images/meetup.png" class="stretch"/>
+                    <!-- todo sábado -->
+                    <!-- reunião só com 2 pessoas -->
+                    <p class="fragment">... até 2020</p>
+                </section>
+
                 <section>
                     <img src="_images/tchelinux.png" class="stretch"/>
                 </section>
@@ -175,15 +187,35 @@
                 </section>
 
                 <section>
-                    <img src="_images/rust-in-poa.jpg" class="stretch"/>
-                    <!-- Rust in poa -->
+                    <img src="_images/not-everything-is-flowers.png" class="stretch"/>
                 </section>
 
                 <section>
-                    <img src="_images/meetup.png" class="stretch"/>
-                    <!-- todo sábado -->
-                    <!-- reunião só com 2 pessoas -->
-                    <p class="fragment">... até 2020</p>
+                    <img src="_images/ff_map.png" class="stretch"/>
+                </section>
+
+                <section>
+                    <img src="_images/bus-full.jpg" class="stretch"/>
+                </section>
+
+                <section>
+                    <img src="_images/no-parking-space.jpg" class="stretch"/>
+                </section>
+                
+                <section>
+                    <h2>"A comunidade pertence à comunidade"</h2>
+                </section>
+
+                <section>
+                    <img src="_images/absolutely_nothing.jpg" class="stretch"/>
+                </section>
+
+                <section>
+                    <img src="_images/socializing.jpeg" class="stretch"/>
+                </section>
+
+                <section>
+                    <img src="_images/presenter.jpg" class="stretch"/>
                 </section>
 
                 <section>
@@ -200,6 +232,22 @@
                     <!-- remoto -->
                 </section>
 
+                <section>
+                    <h2>Resolvido ✔</h2>
+                    <img src="_images/bus-full.jpg" style="float:left;max-width:300px"/>
+                    <img src="_images/no-parking-space.jpg" style="float:right;max-width:300px"/>
+                </section>
+
+                <section>
+                    <h2>Problema persistente:</h2>
+                    <img src="_images/presenter.jpg" class="stretch"/>
+                </section>
+
+                <section>
+                    <h2>Novo Problema:</h2>
+                    <img src="_images/teams-camera-off.png" class="stretch"/>
+                </section>
+
                 <section>
                     <img src="_images/telegram.png" style="float:left;max-width:200px;">
                     <img src="_images/whatsapp.png" style="float:right;max-width:300px;">
@@ -207,20 +255,24 @@
                 </section>
 
                 <section>
-                    <H2>"Tá, mas agora é melhor?"</h2>
+                    <h2>Resolvido ✔</h2>
+                    <img src="_images/bus-full.jpg" style="float:left;max-width:300px"/>
+                    <img src="_images/presenter.jpg" style="max-width:300px;"/>
+                    <img src="_images/no-parking-space.jpg" style="float:right;max-width:300px"/>
                 </section>
 
                 <section>
-                    <h2>Não</h2>
-                    <h3 class="fragment">... sei</h3>
+                    <h2>Problema persistente:</h2>
+                    <h1>Nenhum! 😊 </h1>
                 </section>
 
                 <section>
-                    <!-- offline/avatars only -->
-                    <img src="_images/teams-camera-off.png" class="stretch"/>
+                    <h2>Novo Problema:</h2>
+                    <p class="fragment">... alguns.</p>
                 </section>
 
                 <section>
+                    <h2>Ruído</h2>
                     <ul class="chat">
                         <li><span>X:</span> "Pessoal, alguém trabalha com HTMX? Estou com um problema no load..."</li>
                         <li><span>X:</span> "O Json tem [{"title": "Room", "description": "Nome do cozinheiro"}]"</li>
@@ -230,10 +282,7 @@
                 </section>
 
                 <section>
-                    <img src="_images/what.jpg" class="stretch"/>
-                </section>
-
-                <section>
+                    <h2>Aumento da impersonalidade</h2>
                     <ul class="chat">
                         <li><span>X:</span> "Y, tentei o que vc falou mas deu o erro A. O que pode ser?"</li>
                         <li><span>X:</span> "Responde aí"</li>
@@ -243,10 +292,7 @@
                 </section>
 
                 <section>
-                    <img src="_images/support-unhappy.jpg" class="stretch"/>
-                </section>
-
-                <section>
+                    <h2>Quebra de Conduta</h2>
                     <ul class="chat">
                         <li><span>Rose:</span> "Usuário X tem 1/3 advertências: Não é permitido pirataria no grupo."</li>
                         <li><span>X:</span> "Ah, larga dessa frescura."</li>
@@ -256,6 +302,7 @@
                 </section>
 
                 <section>
+                    <h2>RUÍDO</h2>
                     <ul class="chat">
                         <li><span>X:</span> "Pessoal, como eu posso fazer A?"</li>
                         <li><span>Y:</span> "Bom, por cima, dá pra tentar fazer o seguinte:"</li>
@@ -276,42 +323,13 @@
                 </section>
 
                 <section>
+                    <h2>Discussões intermináveis</h2>
                     <img src="_images/lots-of-messages.png" class="stretch"/>
                 </section>
 
-                <section>
-                    <img src="_images/tired.jpg" class="stretch"/>
-                </section>
-
-                <section>
-                    <h2>"Tá, mas então antes era melhor?"</h2>
-                </section>
-
-                <section>
-                    <h2>Não</h2>
-                    <h3 class="fragment">... sei</h3>
-                </section>
-
-                <section>
-                    <img src="_images/bus-full.jpg" class="stretch"/>
-                    <!-- problemas de transporte -->
-                </section>
-
-                <section>
-                    <img src="_images/no-parking-space.jpg" class="stretch"/>
-                </section>
-
-                <section>
-                    <img src="_images/covid.jpg" class="stretch"/>
-                    <!-- covid ainda está aí -->
-                </section>
-
-                <section>
-                    <h3>Algo se perdeu.</h3>
-                </section>
-
                 <section>
                     <p>"Redução da distância do relacionamento inter-impessoal"</p>
+                    <h3 class="fragment">Algo se perdeu</h3>
                 </section>
 
                 <section>
@@ -322,10 +340,6 @@
                     <img src="_images/travolta.gif" class="stretch"/>
                 </section>
 
-                <section>
-                    <img src="_images/travoltas.gif" class="stretch"/>
-                </section>
-
                 <section>
                     <img src="_images/im-very-intelligent.jpg" class="stretch"/>
                 </section>
diff --git a/comunidades.html b/comunidades.html
new file mode 100644
index 0000000..bd75cc4
--- /dev/null
+++ b/comunidades.html
@@ -0,0 +1,297 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8">
+
+        <title>Ganhamos Algo, Perdemos Algo</title>
+
+        <meta name="description" content="Por que você deveria aprender Rust">
+        <meta name="author" content="Julio Biason">
+
+        <meta name="apple-mobile-web-app-capable" content="yes">
+        <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+
+        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
+
+        <link rel="stylesheet" href="reveal.js/css/reveal.css">
+        <link rel="stylesheet" href="reveal.js/css/theme/night.css" id="theme">
+
+        <!-- Code syntax highlighting -->
+        <link rel="stylesheet" href="reveal.js/lib/css/zenburn.css">
+
+        <!-- Printing and PDF exports -->
+        <script>
+            var link = document.createElement( 'link' );
+            link.rel = 'stylesheet';
+            link.type = 'text/css';
+            link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
+            document.getElementsByTagName( 'head' )[0].appendChild( link );
+        </script>
+
+        <!--[if lt IE 9]>
+        <script src="lib/js/html5shiv.js"></script>
+        <![endif]-->
+
+        <style type="text/css" media="screen">
+            .happy {
+                color: yellow;
+            }
+
+            .reveal section img {
+                border: none;
+            }
+
+            .reveal ul.empty {
+                list-style: none inside;
+            }
+
+            .revel ul.empty li {
+                display: block;
+            }
+
+            .cursor {
+                background-color: #666;
+                color: white;
+            }
+            
+            img {
+                max-height: 90%;
+            }
+
+            td.seen {
+                font-style: italic;
+                font-weight: bold;
+            }
+
+            .semi-opaque {
+                background-color: rgba(0, 0, 0, 0.7);
+            }
+
+            ul.chat {
+                list-style: none inside;
+            }
+
+            ul.chat li {
+                font-family: monospace;
+                font-size: 80%;
+            }
+
+            ul.chat li span {
+                font-weight: bold;
+            }
+        </style>
+    </head>
+
+    <body>
+        <div class="reveal">
+            <div class="slides">
+                <section>
+                    <h2>Júlio Biason</h2>
+                </section>
+
+                <section data-background="_images/drops.jpg" data-header>
+                    <h2 class="semi-opaque">
+                        Comunidades:<br/>
+                        Ganhamos Algo,<br/>
+                        Perdemos Algo
+                    </h2>
+                </section>
+
+                <section>
+                    <section>
+                        <img src="_images/who.gif" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/fast-typing.gif" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/moto.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/unpopular-opinion.jpg" class="stretch"/>
+                    </section>
+                </section>
+
+                <section>
+                    <!-- uma das primeiras comunidades que eu participei 
+                    foi o gurpo de usuários de os/2. eu tinha que 
+                    percorrer 80km (de carro) para o encontro -->
+
+                    <!-- junto com o grupo havia um grupo no IRC -->
+                    <section>
+                        <img src="_images/os2.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src='_images/taquara-portoalegre.png' class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/presenter.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/os2-irc.png" class="stretch"/>
+                    </section>
+                </section>
+
+                <section>
+                    <section>
+                        <img src="_images/Unisinos.jpg" class="stretch"/>
+                        <!-- bolsista gradução -->
+                        <!-- outros bolsistas -->
+                        <!-- comunidade software livre -->
+                        <p>de 1997 até 1998</p>
+                    </section>
+
+                    <section>
+                        <img src="_images/corridor.jpg" class="stretch"/>
+                    </section>
+                </section>
+
+                <section>
+                    <section>
+                        <img src="_images/pytche.png" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/rust-in-poa.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/meetup.png" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/socializing.jpeg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/ff_map.png" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/bus-full.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/no-parking-space.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/presenter.jpg" class="stretch"/>
+                    </section>
+                    
+                    <section>
+                        <h2>"A comunidade pertence à comunidade"</h2>
+                    </section>
+
+                    <section>
+                        <img src="_images/absolutely_nothing.jpg" class="stretch"/>
+                    </section>
+                </section>
+
+                <section>
+                    <section>
+                        <img src="_images/tchelinux.png" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/tchelinux-2019.png" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/tchelinux-volta-2019.png" class="stretch">
+                        <!-- tchelinux, 2019, 3000km -->
+                        <!-- alegrete -->
+                        <!-- bagé -->
+                        <!-- bento gonçalves -->
+                        <!-- camaquã -->
+                        <!-- caxias do sul -->
+                        <!-- erechim -->
+                        <!-- novo hamburgo -->
+                        <!-- passo fundo -->
+                        <!-- pelotas -->
+                        <!-- porto alegre -->
+                        <!-- rio grande -->
+                        <!-- santa cruz do sul -->
+                        <!-- santa maria -->
+                        <!-- santana do livramento -->
+                        <!-- santo angelo -->
+                    </section>
+
+                    <section>
+                        <img src="_images/fugindo.png" class="stretch"/>
+                        <!-- apresentação de Python no Tchelinux -->
+                        <!-- sugestões para criação de grupos locais -->
+                    </section>
+
+                    <section>
+                        <img src="_images/Interested-or-interesting.jpg" class="stretch"/>
+                    </section>
+                </section>
+
+                <section>
+                    <section>
+                        <img src="_images/2020.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <!-- pandemia -->
+                        <img src="_images/covid.jpg" class="stretch"/>
+                    </section>
+
+                    <section>
+                        <img src="_images/things-change.jpg" class="stretch"/>
+                    </section>
+                </section>
+
+                <section>
+                    <section>
+                        <img src="_images/teams-video-chat.jpg" class="stretch"/>
+                        <!-- remoto -->
+                    </section>
+
+                    <section>
+                        <img src="_images/teams-camera-off.png" class="stretch"/>
+                    </section>
+                </section>
+
+                <section data-background='_images/thats-all-folks.jpg'>
+				</section>
+            </div>
+        </div>
+
+        <script src="reveal.js/lib/js/head.min.js"></script>
+        <script src="reveal.js/js/reveal.js"></script>
+
+        <script>
+            // Full list of configuration options available at:
+            // https://github.com/hakimel/reveal.js#configuration
+            Reveal.initialize({
+                controls: true,
+                progress: true,
+                history: true,
+                center: true,
+                // showNotes: true,
+
+                transition: 'slide', // none/fade/slide/convex/concave/zoom
+
+                // Optional reveal.js plugins
+                dependencies: [
+                    { src: 'reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
+                    { src: 'reveal.js/plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
+                    { src: 'reveal.js/plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
+                    { src: 'reveal.js/plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
+                    { src: 'reveal.js/plugin/zoom-js/zoom.js', async: true },
+                    { src: 'reveal.js/plugin/notes/notes.js', async: true }
+                ]
+            });
+        </script>
+
+    </body>
+</html>
+