Steem Chat and Discord are both for live chatting, and I think it's hard to make a Dapp for Live Chat due to the 3 second transaction delay, but I don't see what's stopping anyone from making a Steem-based Twitter @themarkymark.
The "comments" and "replies" categories should work fine (for a Steem-based Twitter).
Steem.chat and the 500 Discord servers are not. It is along those same lines.
Steem Chat and Discord are both for live chatting, and I think it's hard to make a Dapp for Live Chat due to the 3 second transaction delay, but I don't see what's stopping anyone from making a Steem-based Twitter @themarkymark.
The "comments" and "replies" categories should work fine (for a Steem-based Twitter).