According to CacheLogic survey, 61.44% of the peer-to-peer traffic nowadays is video, with audio taking distant second place, representing 11.34% of global traffic. Moreover, 12.3% of all the music files traded on P2P networks are in Ogg format. Almost all of the OGG files are traded via BitTorrent protocol with most of the growth coming from Asia, CacheLogic says.
>> Read the article @ ZDNet
>> A more detailed article @ Slyck.com