Why just one each day then? Why not a shared knowledge base? Do you start with a "bag of tricks" and then hand them out one by one each day to remind people you're the guy with the bag of tricks?

"Oh, yeah, I know a cool trick, but y'all have to wait until tomorrow to find out what it is."

"Look! It's a way to evaluate SQL expressions with a select with a from! Oh, you already knew about it?"

I have nothing against sharing knowledge, especially when seeing someone else do something that can be done better. But just leaving daily breadcrumbs to remind people you're the guy that teaches random trivia feels like attention seeking.

You’re right, a centralized repository would be good too.

Both a centralized repository AND a daily message, especially for new employees, would be ideal, imo!

Normalize chatting and sharing stuff in slack!

I don't think that's a generous way to interpret it.

I see it more as: every day they will go on the slack channel and pause, wondering "Is there a neat trick I've learned or used recently?" then they share it. It's like a ritual to remember that you can share things because it's easy to forget other people don't work the same way you do. Writing it all at once is difficult (you have to remember a lot of stuff at once) and it tends to go unread.

I also think every single day is a stretch, but it's nice to pause once in a while to think about how you could help other people with something you've learned.