It's not a new component of Bing (not yet, anyway), but Microsoft has taken the wraps off a new small-scale search project at its TechFest event this week -- one with a particular focus on so-called viral content. Appropriately dubbed ViralSearch, the effort from Microsoft Research currently uses Twitter as a source for all its data, and offers a variety of ways to track and visualize how a story, photo or video spreads from one outlet or individual to hundreds or thousands of others. That includes a profile view of sorts, which lets you see how influential a particular person was in spreading an item, and how prolific they are in general. Unfortunately, it is still just a research project so you can't try it out yourself just yet, and there's no word on any plans for it to become a commercial product. In the meantime, you can get a quick overview of how it works in the video after the break.