Actually, as a Mac user I just don't understand how you Windows folks have tolerated all the hoops you have to jump through to avoid the email problems, browser problems, and p2p problems.
In 14 years on the Mac, such stuff has never been part of my online experience.
So, it's a minor point, but the problem isn't with LimeWire or p2p, though they often make the user notice Windows malware much more.
As for "this site"--I'm confused
I've never heard of this site,
www.gnutellaforums.com triggering malware problems!
Anyway, I'm sure one of the good Windows folks can help you better. Please, though, don't blame the wrong group.
cheers