Wired has an article on the movement of file sharing back to the Usenet, where it more or less started, away from apps like eMule and Bit torrent. It looks like traffic on some Usenet warez groups has quadrupled over the past year, thanks to the RIAA and MPAA efforts to shut down other avenues, and also to improvements in technologies that allow the more efficient downloading of large files.
Details here.
