But it is not really more rampant than on IRC or newsgroups during their gold ages.
While usenet (Newsgroups) isn't as prolific as it used to be, a litttle test of mine to prove a point to some a-holes produced almost 16 times more viri on usenet during the test period. Both involved a broad sweep of both Kazza and some off-color newsgroups. I pulled about 10 gb down from both and had thousands of positive virus IDs. Mostly sub7 and other backdoors.

These A-holes put Kazaa on my box at HOME to download some Cyprus Hill, since it kind of went with our party theme.... I was so ****ing mad I felt I had to prove something.... touch my keyboard again and yer mine...

Kazaa is a risk and as stated in another thread, you can rape someone with it. Usenet is also a risk, been infected there serveral times NOT paying attention. But I can't break the addiction... there is too much info there to ingnore and not play.