Trolling around [again]
found these details re :- Bit Torrent

BitTorrent, the beloved file-sharing client and protocol that provides a way around bandwidth bottlenecks, has become the newest distribution vehicle for adware/spyware bundles.
"This is the marketing campaign to end all marketing campaigns," said Boyd, the Microsoft Security MVP (most valuable professional) known throughout the security industry by the "Paperghost" moniker.
Boyd said he got the first inkling that BitTorrent was a major adware distribution vehicle while searching for the source of Direct Revenue's Aurora, an adware program that includes the prevalent "nail.exe" component. Sifting through mountains of HijackThis logs posted on security forums, Boyd said the answer was staring him in the face. (HijackThis is a popular freeware spyware removal tool that keeps detailed logs of Windows PC scans).

In the logs, he found that "nail.exe" and "aurora.exe" were always listed alongside "btdownloadgui.exe," the user interface that downloads/uploads when using BitTorrent.

"I checked hundreds of those logs, and more often than not, [btdownloadgui.exe] was chugging away in the background. No wonder none of the victims (or spyware experts) seemed to know what site Aurora was coming from—there was no site. It would have never occurred to the end users that it could have crept in by another means altogether," he said.
Is this the end of Bit Torrent ?

link to comments on this

Anybody who has any sensitivity to security could tell you BitTorrent is inherently insecure. Besides most of the traffic is illicit even though RCIAA and MPA haven't figured out how to deal with it. My suggestion is if you don't want to get sued stay away, or don't if you want to be a knucklehead.



And in there, found the link to just WHY Kazaa is SO well loved

Computer Associates International Inc. has launched a list of the worst spyware threats as part of a new program to combat unwanted software "pests." At the top of that list: the peer-to-peer application Kazaa.
Kazaa has a high "clot factor" of 50, a measurement of how many registry entries, files and directories an application adds. The higher the clot factor, the more difficult a pest is to remove.
Doesn't look good until you see GAMESPY Arcade !!!!!!!!!!!!!!!

The highest clot factor in the top five is GameSpy Arcade, at 128