Today I Learned is not trademarked
I just found out that "Today I learned" is a common trend!
TIL about TILs
If that abbreviation is new to you, TIL stands for Today I Learned. You usually use it as a prefix to an interesting piece of knowledge you acquired recently. For example: TIL earth is round! I noticed recently that folks like Simon Willison and Julia Evans have a TIL section in their sites. They use it to share small snippets of knowledge they happen to come upon in their daily adventures.
Sayonara TIL, Hello Notes
I have renamed the TIL section to Notes.