Sites for /diy/ so far, more coming, more descriptions, leave your pages and comments.
general
http://www.instructables.com/
http://hacknmod.com/
http://www.ikeahackers.net/
http://craftzine.com/
http://www.younghouselove.com/
http://kipkay.com/
http://www.vintageprojects.com/
http://www.reddit.com/r/diy
http://hackaday.com/
Crafts living.
http://makezine.com/
http://www.copycatcrafts.com/
A/V
http://www.avsforum.com/
http://forum.doom9.org/
i dont know lol..
http://www.1010.co.uk/org/
http://www.lulu.com/items/volume_63/2512000/2512986/4/print/2512986.pdf steam stuff i guess...
knit
http://www.hipknitized.com/
http://www.bernat.com/
http://www.purlbee.com/
knitty.com
Ravelry.com (Im not sure)
Info stuff
http://www.infodocs.org/library/
https://sites.google.com/site/scienceandmathguide/ (sci sticky)
Garden
http://www.squidoo.com/grow-shiitake-mushrooms
chainmaille
http://www.mailleartisans.org/
funny stuff
http://thereifixedit.failblog.org/