P2P usage stats you can rely on

Cachelogic has posted a very good, in-depth study of network traffic using data gathered from a variety of large ISPs. They conclude that P2P use has not dwindled; that P2P systems are the main use of bandwidth today ("the killer app for broadband")l that P2P is used to move lots of kinds of files, including ones that are noninfringing (strong market-demand for symmetrical connectivity); and that P2P's impact on ISP bandwidth charges are largely the result of anti-detection design choices that make it hard for P2P systems to efficiently use bandwidth. So much for the salutory effect of extreme copyright laws, lawsuits and "eduction" campaigns.

Link

(via Waxy)