I've noticed recently on my brower (Firefox) that the advertisement that appear within a page such as FoxNews are directly what I was searching for recently. Such as if was were looking for a pair of shoes, all the sudden there were be several different shoe advertisements. Same with cars, I was shopping for a specific car and suddenly I began seeing various similar cars advertisements. NOTE: These are NOT pop-ups, but found within or on the side of pages I'm reading. Is there a way to block or stop my searching/shopping information from being used to target me for advertising?