Silliness, randomness, drunkenness, attention-whoring, entire threads devoted to pictures of kittens. It's all in here. For when you have nothing to say but just can't stop posting.
Cosplay (コスプレ, kosupure), short for "costume play". It ain't a hobby, it's a lifestyle!
The group's name says it all - From Legos and lightsabers, to Blythe dolls and board games. (And everything in between, really!)