today's social platforms own your data. built 10k followers? wrote years of posts? if you leave, you lose it all. you don't own your network - they do.
with email, you can switch from gmail to protonmail and keep your contacts. same idea here: your posts and followers live on your own server (called a Personal Data Server). apps like bluesky just connect to it.
enter any handle above to see how atproto stores their social data.