My colleague Laurie introduced me to the Wikipatterns site this week.  What a great resource. It offers sound and strategic advice for building wikis - one of the hardest Web 2.0 tools to make work well.

I am also excited by how relevant this content is to more general network building. Conversations touch on the role and attitudes of key network actors  (check out the WikiGnome, WikiZenMaster and WikiTroll pages), as well as tips for getting  users/members excited (Barnraising, Invitation and Welcoming, along with many more.)

I also really like the combination of editable content, voting and blog posts - the combinations of which is collaborative and engaging.