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What are the wider implications of social networks like Facebook for our society? Are they a force for good or bad? And pick of the week: Cliqset, a site which allows you to use all your social networks in one place.

After mapping humans' intricate social networks, Nicholas Christakis and colleague James Fowler began investigating how this information could better our lives. Now, he reveals his hot-off-the-press findings: These networks can be used to detect epidemics earlier than ever, from the spread of innovative ideas to risky behaviors to viruses (like H1N1).

In the world of Facebook or Twitter, people love to hear feedback about what they're up to. But sit them down for a performance review, and suddenly the experience becomes traumatic. Now companies are taking a page from social networking sites to make the performance evaluation process more fun and useful.

P2P Foundation article