diff --git a/content/books/things-i-learnt/_index.md b/content/books/things-i-learnt/_index.md
index 31079ba..faa1fe8 100644
--- a/content/books/things-i-learnt/_index.md
+++ b/content/books/things-i-learnt/_index.md
@@ -76,3 +76,4 @@ template = "section-contentless.html"
 	* [When It's Time to Stop, It's Time To Stop](time-to-stop)
 	* [Code of Conduct Protect YOU, Not THEM](coc)
 	* [Learn To Say No](say-no)
+	* [Take Responsibility For The Use Of Your Code](responsible-code)
diff --git a/content/books/things-i-learnt/responsible-code/index.md b/content/books/things-i-learnt/responsible-code/index.md
new file mode 100644
index 0000000..d86b631
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+++ b/content/books/things-i-learnt/responsible-code/index.md
@@ -0,0 +1,48 @@
++++
+title = "Things I Learnt The Hard Way - Take Responsibility For The Use Of Your Code"
+date = 2019-07-18
+
+[taxonomies]
+tags = ["en-au", "books", "things i learnt", "personal", "responsibility"]
++++
+
+This is hard. Very very hard. It's the difference between "freedom" and
+"responsibility".
+
+<!-- more -->
+
+There is nothing wrong in writing, for example, a software to capture people's
+faces and detect their ethnicity, but you have to think about what that will
+be used on.
+
+Even on an open source project, you can take responsibility without blocking
+people. You can make your project harder for people trying to abuse to use it,
+to the point they will have to take control of their own fork.
+
+One example is a small application called [Tusky](https://tusky.app/), which
+is "An Android client for the microblogging server Mastodon", completely open
+source. Mastodon is a network of microblogging servers with connect to each
+other, kinda like Twitter, but you can pick a different server that is not
+twitter.com and still get updates from that server. One of the servers that
+appeared in the server list is an alt-right server which, as most alt-right
+forums, promote a lot of hate. What Tusky did? When you try to add an account
+on that server, instead of adding the account, [they play a video of Never
+Gonna Give You Up](https://github.com/tuskyapp/Tusky/pull/1303), basically
+[rickrolling](https://en.wikipedia.org/wiki/Rickrolling) anyone who, well, is
+an alt-righter.
+
+Tusky broke the open source license? No, the code is still available. Anyone
+wanting to use the server can pick the code, fork it, remove the rickroll and
+release their own version of the application. But Tusky developers took an
+instead of saying "We'll not take part in promoting hate speech" and one can't
+deny that they did.
+
+It is a bit hard to do so on the company code -- you would get some reprimands
+if you try to shame or block one of the company clients from using the company
+application -- but you [can say no](/books/things-i-learnt/say-no) and,
+depending on how offensive you think the use the code is, you can even start
+looking for a new place to work. People on larger and "cooler" companies, like
+Google, left their jobs because they didn't agree with what the company was
+doing, and so can you.
+
+{{ chapters(prev_chapter_link="/books/things-i-learnt/say-no", prev_chapter_title="Learn To Say No") }}
diff --git a/content/books/things-i-learnt/say-no/index.md b/content/books/things-i-learnt/say-no/index.md
index 4640070..614c55b 100644
--- a/content/books/things-i-learnt/say-no/index.md
+++ b/content/books/things-i-learnt/say-no/index.md
@@ -24,4 +24,4 @@ you in the former, you should start looking for a new place to work. If you
 said you won't be comfortable and still _did the work_, and they had to label
 you something, then this place doesn't respect you as a person.
 
-{{ chapters(prev_chapter_link="/books/things-i-learnt/coc", prev_chapter_title="Code of Conduct Protect YOU, Not THEM") }}
+{{ chapters(prev_chapter_link="/books/things-i-learnt/coc", prev_chapter_title="Code of Conduct Protect YOU, Not THEM", next_chapter_link="/books/things-i-learnt/responsible-code", next_chapter_title="Take Responsibility For The Use Of Your Code") }}