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It's not just Facebook and it's not just me. Every "social networking service" has had this problem and every user I've spoken to has been frustrated by it. I think that's why these services are so volatile: why we're so willing to flee from Friendster and into MySpace's loving arms; from MySpace to Facebook. It's socially awkward to refuse to add someone to your friends list -- but removing someone from your friend-list is practically a declaration of war. The least-awkward way to get back to a friends list with nothing but friends on it is to reboot: create a new identity on a new system and send out some invites (of course, chances are at least one of those invites will go to someone who'll groan and wonder why we're dumb enough to think that we're pals). That's why I don't worry about Facebook taking over the net.

"The online encyclopedia is set to trial two systems aimed at boosting readers' confidence in its accuracy. Over the past few years, a series of measures aimed at reducing the threat of vandalism and boosting public confidence in Wikipedia have been developed. Last month a project designed independently of Wikipedia, called WikiScanner, allowed people to work out what the motivations behind certain entries might be by revealing which people or organisations the contributions were made by . Meanwhile the Wikimedia Foundation, the charity that oversees the online encyclopedia, now says it is poised to trial a host of new trust-based capabilities."

The beauty of open-source applications is that they are continually improved and updated by those who use them and care about them. Dartmouth researchers looked at the online encyclopedia Wikipedia to determine if the anonymous, infrequent contributors, the Good Samaritans, are as reliable as the people who update constantly and have a reputation to maintain.

By subdividing their analysis by registered versus anonymous contributors, the researchers found that among those who contribute often, registered users are more reliable. And they discovered that among those who contribute only a little, the anonymous users are more reliable. The researchers were most surprised to find that the reliability of Good Samaritans' contributions were at least as high as that of the more reputable registered users' contributions.