SanCom is a mini 4chan to me.
I like SanCom for its random Japanese (and Chinese lol) stuffs. Learned quite a lot on disturbing cultures... and netizens in general.
I've only been around for about a year, though. I dunno if I will someday get bored and move on.

Yandere Simulator “Could Be Renamed”
Studio FOW Short Totally Tentacular
Phantom World Stretching Expectations
Charming Futaba Nendoroid
How You Wish KyoAni Made Phantom World…