Google is all shades of terrible when it comes to privacy invasion, and they will stop at very little to get their grubby mitts on your personal data. But even they realized the perv glasses weren't good publicity and pulled the plug. Hell, I remember Google Glasses wearers getting their teeth knocked in when they walked into public places.

Zuckerberg and Facebook don't even rise to this minimal level of corporate image self-preservation: they just want the data, decency be damned.