This just in: Pete Cashmore of Mashable! is holding the 2006 Social Networking Awards. There are twelve categories and the winners will be announced on the 22nd at 4pm PST. As of writing there is no indication that the voting has ended so vote now! (Visit the website and you’ll be greeted with quick links at the top.)
Footnote: Not too long ago, SEOmoz released a list of Web 2.0 winners.