I remember. I killed my computer once with adware to the point where I needed to reformat my drive and reinstall everything. It sucked, but it taught me to always pay attention to installers and not to just randomly install anything and everything.

I've also helped other people deal with these problems before. I found that aftwr taking the time to show them how they end up inatalling that crap, the kinds of things to avoid and setting them up with some removal tools they tended not to make the same mistakes.