Google uses your cookies (sites you've visited) to determine your age and gender. From this it picks ads that would be of interest to you.
I have two computers, a laptop and a desktop. The desktop I don't use very often, mostly only when streaming or watching youtube. Anyways I was using it today and I noticed something a little odd. I was checking up on my usual blogs that I read, and noticed a VS ad on the page. Nothing out of the ordinary, but as I continued going through sites the ads were geared towards women. I seen ads for heels, dresses and perfume, and then finally kotex.
This is when I really noticed something was different compared to my laptop. So I did a google search on it, and found this.
http://blogs.discovermagazine.com/80...ale-and-b-old/
See what google thinks of you.
www.google.com/settings/ads/onweb/
As it turns out since the last time I cleared my destops browser history, I had a pretty womanly history. So if you want to "pass" on google feminize your internet usage...
Kind of makes it feel like big brother is watching your every click.