The thing I love about these compared to regular blogging is that they reduce the barrier to writing something up to almost nothing. Did I learn something? If yes, I can write it up as a TIL - no pressure at all for it to be anything novel or interesting to other people.
I refer back to mine a LOT. The principal audience for them is future me - if anyone else finds them useful too that's just a bonus.
100% this. Several times a week I'll be trying to do something, remember I've written about, and then find a TIL my past-self wrote that explains how to do the thing. It's really satisfying each time it happens.
But besides that, it's strictly superior format as it evolves with time compared to big well researched articles that are more worthy to share.
