I see you're still at it. I don't know where everyone else has gone to, but anyway I've been notified recently that someone wants to start archiving pony stuff on Twitter. The motivation is obvious given the many recent changes to that site. There's also many artists there that do not post their pony art anywhere else, and fishing for ancient accounts associated with conventions, websites, DHX staff and so on will be very informative for fandom history.

Both of us are not too familiar with the fandom on Twitter, so I was hoping that someone here already has such a list they'd be willing to share.

Similarly, there's a list for deviantart too, although I think that one is in much better shape for now.