The Federal Trade Commission is giving a bit of pre-marriage advice to Facebook and one of its many betrothed, messaging app WhatsApp, which said “I do” to Facebook’s $19 billion (with a “b”) proposal back in February. Given Facebook’s past transgressions, the FTC felt that maybe it was worth reminding the giddy-in-love couple that there are laws about what they can and can’t do with users’ data. [More]