2 community sites I never heard of before

have you?

Ravelry, a knitting site

and

Fashioning Tech, a sort of social networking site about smart textiles.
This one I know a little about (I joined), it was started by Syuzi Pakhchyan who recently wrote a book of the same name. I'm not really sure what to do on there though :P

If you're on Fashioning Tech "friend" me! I'm still waiting for an invitation to Ravelry, but I'd love to hear insights or reviews of the community!