Michael Feldstein looks at Xpana.com, a service well worth exploting. While he questions whether it's a PLE, I would characterize it more as a social leaving network. It's not a PLE because there's no sense of ownership – you log on to the Xplana site and work within Xplana's environment. Why is that important? This is why. That said, Xplana certainly offers a lot worth looking at. It draws from some of the best features of social networks, encouraging people to upload content while at the same time offering them a wide content selection.
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