I assume what people are interested in is one thing, but things they may _need_ is another. Being able to hoover up information that is more up to date than wh

I assume what people are interested in is one thing, but things they may _need_ is another. Being able to hoover up information that is more up to date than when you last filled out the survey means they could potentially be more accurate. i.e. You're shopping for some type of product, your search history and browser history indicates this, but is outside the realm of what you filled out in the survey. Being able to direct some ads that fit your current needs could be lucrative. I'm not an advertiser, but this is just my small bit of thought on it. Perhaps others are able to confirm or deny this is what's happening.