@ipoga All the tags are probably a good idea! :) We would just need to convince other people which tag to use.
I believe I already saw a larger #STS presence, but good idea to add these other hashtags.
In practice, I just checked a couple of accounts to see who they follow.
And don't forget you can use https://fedifinder.glitch.me/ to checkout who of the people you follow on Twitter are already here.