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Someone with spare time should be able to write a quick CI script to build a blog with any static site generator.

The structure is perfect for that, of course. :)

You could grab https://github.com/thoughtbot/til/commits/master.atom and select commits beginning with "TIL *" with Yahoo Pipes or something similar. I agree though, other posters' suggestions of gh-pages would be nice.

Here's an RSS feed: https://github.com/thoughtbot/til/commits/master.atom

With github pages isn't that just a few setup steps away?