McAfee actually doesn't get the highest ratings for security software. They're good, just not the best. Of course, that's a matter of opinion, but that's what my research showed.

Another thing about advertisers, as far as email goes, whenever you sign up for newsletters, fill out surveys, buy stuff, etc., there's a good chance someone's taking notes. There's software that keeps track of what you buy and show interest in, and targets items and services to you that way.