It appears many companies try not to comply to the spirit of the law. Stack Overflow, for example, sent an e-mail claiming to have opt-in permissions to promoti

It appears many companies try not to comply to the spirit of the law. Stack Overflow, for example, sent an e-mail claiming to have opt-in permissions to promotional messages, while not actually having them and only providing opt-out settings: "With your continued permission, we will send you promotional messages based on your preferences. To see and change your opt-in preferences, manage your Email Settings." I guess with such attitudes it's not going to be enforced much, otherwise there will be no one left to enforce it on.