Hey brian,
Admittedly, I
sometimes download from torrent sites. I download an album, and if I like it, I buy it, otherwise it ends up in the trash. I never had any malware related problems or anything like that. BUT, I think that it's a rather risky business to partake in, because the RIAA means business when it comes to tracking people down. They contacted my cousin about downloading illegal stuff, and he ended up making some sort of deal with them -- it wasn't cheap, though.
Since that happened, I lowered my torrent activities substantially. It's better to be safe than sorry. You never know who's out there, snooping around.
My advice to you is: Don't download from torrent sites.
When I was a Windows user, I did pirate programs out the ***, but ended up with a gunky system, full of spyware and software I didn't own... I didn't even need the crap I downloaded and installed. I guess I just did it because I could.
Since I switched to the Mac, anything that I have installed is either free, or I paid for it. It's a nice feeling to know that my Mac is legit, 100%.
I know that some programs out there carry a ridiculously high pricetag, but that's because they're for professional use.
Sorry about the rant... just wanted to share my opinion.