Behavioral advertising is, as defined by www.bbb.org, Ads using information collected across multiple unaffiliated web sites that you visit in order to predict your preferences and show you ads most likely to be of interest to you.

many people fear that it is a violation of their privacy - and that is where this image to the right comes in. But will simply seeing this icon cause people to click? And even if they do click it, will they learn any truly helpful information? I personally am having some trouble believing that the answer to either of these questions is "yes."
After doing some research on their website, I have found that the publishers of www.aboutads.info believe they really will help, but no evidence that they actually will.
I took the liberty of asking a few of the more computer savvy people at my job if they had ever seen or heard of this company or their logo, and to no surprise they all answered "no." I asked them if they thought this company would be of any use to them, and they all answered "no", although half of them agreed that behavioral advertising does violate their privacy. I asked a total of 4 co-workers each of these questions.
So, according to this blogger, the consensus all seems to be the same: www.aboutads.info will be pretty much obsolete before any of your friends even discover what it is.