Ravelry!

If you haven't heard of Ravelry, it's a social networking site for knitters, crocheters, and other "fiber artists". It allows you to post patterns and pictures of things you're working on or completed, you can post information about the yarns you use, or want, or want to get rid of. You can search for other users or patterns. I'm not yet using the site to its full potential, haven't done that much knitting yet to warrant posting, but if you're on there, feel free to friend me - I'm zandperl there as everywhere.