(Saying this as an excited bluesky user and someone who really really hopes all of this succeeds long-term) I think possibly their biggest challenge ahead will

(Saying this as an excited bluesky user and someone who really really hopes all of this succeeds long-term) I think possibly their biggest challenge ahead will be making parts of it non-public. Private mutes/blocks, having some analogue of Circles for whitelisting post viewers, etc. Having a truly open and public database - especially once signups no longer require invite codes - is going to mean a cambrian explosion of tools and clients the likes of which we've never seen before in social media (which is already sorta happening even with closed signups). But that might include malicious apps that take advantage of that same openness to stalk, spam, and harass (especially given it's coinciding with a huge leap in AI technology). It might be AT Protocol's biggest test.