I keep seeing lots of long-time #fediverse users saying 'don't favourite posts it does nothing' but actually when you favourite my posts it makes me smile and I'm sure I'm not the only one.

@djdellamorte I favorite (many) posts that make me smile, or are interesting, to let the author know that I read and enjoyed them.

I boost (some) posts that I think other people really should see.

I bookmark (few) posts that I want to be sure to find later (maybe to read linked articles in depth or reference elsewhere).

@swetland @djdellamorte
Best way to do it, IMO.
If you boost everything you like, people are going to end up muting/unfollowing you.
@AustinPSheehan @djdellamorte You can also just disable showing boosts from specific users if someone's a prolific booster or has poor taste in boosts but their actual posts are still of interest. A nice thing about mastodon/fedi is lots of user control.