With facial recognition, Facebook faces the same dilemma. Facebook could give people the choice to opt in to its photo recognition database, but then how many people would bother? The whole point of Facebook facial recognition is to tag all of your friends in a photo without any manual work. If most of your friends aren't participating, the feature is worthless.

I'm not defending Facebook's actions, but I understand why the site behaves the way it does. As long as Facebook introduces new features, there will be new privacy snafus. Facial recognition wasn't the first, and won't be the last.

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