Today I Learned is not trademarked
For the longest time, I believed that "Today I Learned" was an idea coming out of HashRocket. Which was a shame, since I really loved the idea, but I did not want to steal someone else's idea. But, Today, I saw Julia Evans had a blog with the same name. Which caused me to reconsider my previous presumptions. So I searched for it, and lo and behold: It even has a subreddit!
So I got quickly to work, and here we have it!
My blog now, has a new category. This entry is of that category. With its own Atom feed and everything!