CoRank is a site which lets you create your own social bookmarking sites, which are hosted at yoursite.corank.com – a similar kind of thing to what Ning does with social networks. This is a great way for small groups to…

Operator11 looks like a truly groundbreaking social web service: it’s a social television network. It’s like a live version of YouTube (though you can upload preproduced video if you want) but what makes it a real killer for me is…