A tip for people who don't like to have surfing behavior spied upon. Ghostery is a free plugin for chrome, IE, firefox or whatever browser you use.

http://www.ghostery.com/download

Just here on FTR there are 5 apps spying on you. One is facebook, every website that has a facebook "like" link will send your surfing behavior to FB, even if you don't have FB open! The other 4 are twitter, google+, google analytics and Crazy Egg (tracks where you click on the site). Ghostery will block all these information gathering apps on every website you visit.