This is a reminder to everyone that there is a ROT13 button at the top of the blog. But when that's too cumbersome to use for reading through lots and lots of comments, I have found a shortcut that works well with my current browser (so it might work for you too!).
1. Enable the Bookmark Toolbar in Firefox.
2. Rick-click the bookmark bar and add a New Bookmark.
3. Paste the following code into the New Bookmark and name the bookmark "ROT13".
NOTE: This does work to read Disqus comments in my browser, but does not work to transform a comment that is still in the Disqus "compose" box. You will still need to compose comments in a ROT13 window, unless someone has a cleaner solution.
Credit here to Jacotus.