>>23456 You mean avatarfagging, or circlejerking within a closed community?
/mde/ has 105 active posters, placing it just barely outside my scope. But its population was right for a while and /imouto/ just dropped into the <100 threshold. /imouto/ is, for an outsider, almost a carbon copy of /animus/ and thus there's not much to say about it, so instead I'm covering /mde/.
The first thing you'll notice with this board is the atrocious CSS. The only conceivable explanation is that they're using it to ward off people who can't change the CSS.
/mde/ was formed by Redditors exiled from r/milliondollarextreme, an ayy right community banned for being too bigoted and intolerant.
As the name suggests, it's all about Sam Hyde and people around him. Most of the threads on the first page obssessively cover the tiniest details and news of their lives and art, such as this mention on Chapo Trap House (who they accuse in another thread of lurking the board). But shitposts and threads about the board itself and politics are also made.
The userbase are anything but fanboys and constantly criticize Sam's life choices and behavior, like being too greedy with his content's monetization. If anything, they hate him. Their conversations are informal, with little use of capitalization. Insults are traded on a regular basis; it's not a happy community. Reaction and OP images can be very diverse. Ideological alignment is far right but not /pol/ tier.
The board is useful if you want updates on Sam or his friends, but -in large part because of its subject matter- is otherwise not a very nice place to be.