For many years I‘ve been a huge fan of law professor James Grimmelmann. His legal analysis on various issues is often quite valuable, and I‘ve quoted him more than a few times. However, he‘s now arguing that the now infamous Facebook happiness experiment and the similarly discussed OkCupid „hook you up with someone you should hate“ experiments weren‘t just unethical, but illegal. Grimmelmann, it should be noted, was one of the loudest voices in arguing (quite vehemently) that these experiments were horrible and dangerous, and that the academic aspect of Facebook‘s research violated long-standing rules.