>>83902013On 8ch /co/, there's a thread, but besides for SB99, it's deader than dead. Two other boards there have threads, but just for dropping art rather than discussion.
On twitter, you see people talking about it, but of course you got to search for it. Some fanart, I suppose.
Tumblr as well, you can see some people talk about it, but you have to search for it. It's much more popular now, though, so there's the usual "Oh no, people are drawing x character like y". But at least here you can find more fanart.
Then there's DeviantArt, which I stray away from, that has people talking about it.
Then there are the foreign places that probably talk about it.