- Canvas: https://canv.as/
My main community. It's basically a work-safe (if you don't count swears) image-board-ish site, with a built in drawing/remix tool. The mods seem to have left, and it appears to be down for me at the moment, but it's still a great site with a mostly great community.
- We Draw Comics: http://beta.wedrawcomics.com/
A new community I had joined recently. You draw panels to comics one-by-one, eventually creating a story with the community. Learned about it through Canvas.
- HardcoreGaming101: http://www.hardcoregaming101.net/
Game website about obscure or overlooked titles, often times ones that have little/no coverage anywhere. Chock full of interesting game trivia. Has a lengthy list of articles, a blog and a forum for your viewing pleasure.
I would post one more if one of the members on it didn't hate this website with a passion, but oh well.
EDIT: Shoot. Turns out this isn't for just "General" websites… Meh, I'll keep this here.