Actually I have often wondered about this-how do "they" know where I am? I do not get this pop up, but I often see, embeded in a page, 'meet women from *(my area)'. Now I also figured that the ad was somehow reading my IP address and thus knew where I was. But when I traveled somewhere else, the ads changed. But my IP address remains the same-does it not?
BTW-I am on a Mac
How do the ads know where I am?