Farmville Resorting to Extortion?
I haven’t investigated the reasoning behind it, but game publishers through Facebook are asking their players to submit email addresses under the premise that Facebook will make it impossible for them to keep players up to date. That must not be eliciting enough of a response because FarmVille seems to be resorting to extortion tactics by offering free stuff in return for email addresses.

"The box is locked! You need the passcode to unlock it! Want us to email you the passcode? Sign up for FarmVille emails!"

Resorting to extortion??
I thought it was their business model!