I mean, after you've seen 10 ads in one day telling you that you are the lucky winner of an ipad, it just starts training you to never click on the ads as they're probably not what they say they are.
Here's one from the front page of Geekzone:

If that guy is 40, I'm feeling really good about how I look at 40!
I now don't trust this advertiser enough to click on their ad, let alone purchase insurance from them!
Does anyone here actually click through on web ads? Those of you who don't actually have ad blockers installed. I can't recall the last time I deliberately clicked a web ad, I barely even see them these days.




