First of all, every time I open the app I get a prompt to sign into Facebook, even though I paid for the "ad free" version of the game. Next, I opt to not sign into Facebook, yet they still sign into my Facebook account (to show me my friends that play WWF) and ask if I want to challenge them to a game. It is a violation of my privacy for Zinga to use my FB account when I havent authorized them to do so.
Vzmtvf about Words With Friends – Word Game