The Yahoo toolbar gets installed almost every time I update Java or Flash. It drives me crazy because (a) I want to update frequently to stay secure, but (b) I don't want to get a bunch of crap bloatware and it seems like they use a different "gotcha" technique every few months so I always get duped.
It's infuriating because it makes (some) users want to avoid these updates which are, presumably, in the interest of the entire community.
Can't they get their ad-revenue somewhere else besides critical security patches???