Rex Sorgatz, who works for MSNBC and also writes an eclectic and insightful blog at Fimoculous.com, has launched something at the news site that I think is a great effort at harnessing Digg-style voting power in the context of a news event — and in a much more interesting way than the typical user poll or survey. It’s called iPredict (I’m going to forgive Rex the use of the now-ubiquitous “i” prefix), and it creates a real-time graph of user votes on a particular outcome, such as whether Harry Potter dies in the final book. You can see how many people voted and the history of earlier votes. Very cool. Rex has an overview of the thinking behind iPredict (and a great Marshall McLuhan quote) on his blog.