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Addthis.com provides a popular, free social networking "favorites" widget (you can see an example in the block to the right of this article.) It's a great, fast and easy way to allow people to favorite yoru content on Digg, Facebook, Twitter and so on. Unfortunately, YSlow doesn't like AddThis.

I attend Carnegie Mellon Silicon Valley, an extension of the main CMU campus located in a restored naval building on Moffett Field. Our campus currently hosts about 100 students and only a dozen or so professors, and this small size allows us to adopt new social media applications faster than a larger campus with a more complex organization.