I have a second account on Twitter, GOBI - Great Old Book Illustrations, which presents (mostly) 19th-century book illustrations found (mostly) on the British National Library's huge image archive on Flickr, with some cleanup & adjustments in Paintshop Pro. Haven't set up a Mastodon account for it yet; will edit this post as soon as I have a URL available.
No one knows if Twitter will last at all, or in what form and ambience if it does. I'll continue to post and comment on Twitter for now, but every day it feels like the Weeping Angels are getting closer and closer. For the moment, I'll try to post at both Mastodon and Twitter, where suitable.
Here are Twitter links to my accounts there, at least as long as they continue to exist:
My general account: https://twitter.com/BruceArthursAZ
And the "GOBI - Great Old Book Illustrations" account: https://twitter.com/BruceArthurs4