aggregates twitter, pownce and facebook with a lot more rss feeds to social networking sites coming. See the Vote page for what they're working on. Contact me for a beta invite
a single-purpose wiki for educators to link to and describe their social networking sites. I'm including a snapshot of the list as it is today, but it keeps growing and as it does so provides an interesting insight into the variety of ways that social net
SocialEngine is a PHP-based social network platform that lets you create a social network on your website. Right out of the box, your social network will offer nearly all of the features found on today's wildly popular social networks. Instead of hosting