Use Ghostery (http://www.ghostery.com/ http://www.ghostery.com/) or Do Not Track (http://www.abine.com/dntdetail.php http://www.abine.com/dntdetail.php), or var

Use Ghostery (http://www.ghostery.com/ http://www.ghostery.com/) or Do Not Track (http://www.abine.com/dntdetail.php http://www.abine.com/dntdetail.php), or various others addons like these, and you will have the problem partially solved.