I haven't noticed much from companies/institutions... In previous years, my gym used to do some pride-month related things, such as adding pride-related messages to the lockers. This year it hasn't done anything yet.
I like it more than Discord, which a lot of subs have been directing people to. Nothing wrong with Discord - it's great for live chat and whatnot - but I don't find it to be a good reddit alternative. Every time I drop in I feel like I'm walking into the middle of a conversation with no context.
I love the post-and-reply paradigm with threaded comments, so Lemmy feels like a much better fit for me. Makes it much easier to casually browse and consume content, and participate in a more asynchronous manner.
Still trying to figure it out. Tried the Connect app because it had good reviews, but I got more errors than not. Just started on Jerboa and seems way friendlier. Now trying to rebuild my feed.
Just like when starting in Reddit, gaybros is my first stop!