Social-*bookmarking*

First there were social-networking sites; now there are social-bookmarking sites. Call it online group think: "Social bookmarking and social content sites rely on the opinions of users to determine what Web sites are most worth reading," as Forbes.com puts it. Take Del.icio.us is the prime example (Forbes focuses on this pioneering glorified-bookmarking site because Yahoo just acquired it. Sounds rather culinary, but Del.icio.us is as general as its 200,000 registered-user group (the figure before Yahoo started marketing it). Then "there's Digg, Memeorandum, Flock, NewsVine, RawSugar and Wink … (all in various preproduction phases)," Forbes adds. Different bookmarking, or "tagging," sites focus on different things. Digg is about collaborative newsmaking. "Users submit and either promote or demote tech-news stories via a voting system called 'digging'," according to Forbes. "The more people who 'digg' a story, the higher up on the Web page it goes. About 500,000 people visit the site daily."