Mastodon, for the last two years has been my favourite social media platform, better conversations, smarter people, etc etc, it has also been the major driving force in my music sales on Bandcamp, thank you for that, it really means a lot.
The other platforms don't come close, however, I am surprised to say, two random interactions on Threads in as many days have lead to me selling music, which is shocking.
I don't think Bluesky has done anything for me at all.