Spyware pisses me off to no end. Not because it pops up unwanted ads, but because it's nonstop pop ups. I could accept moderation, maybe once when MSIE is open, but most open every 10-60 seconds endlessly. Which is so ridiculous, because even IF you wanted to buy something, you can't because you have 50 windows opening a minute and I feel REALLY bad for newbie PC users, that have no idea what it is and how to make it stop. It's malicious... worse than ActiveX dialers ever were. Fuck anyone that uses them.
The funny thing is, you get them from non adult sites more than adult sites. Obviously adult webmasters know better, that people have to actually be able to see the ad, not buried under countless other ones.

Spyware