Because people are stupid and Facebook gets thousands of page hits by the same people daily, generally by morons who barely got past typing "face book" into goo

Because people are stupid and Facebook gets thousands of page hits by the same people daily, generally by morons who barely got past typing "face book" into google. Techcrunch users have likely been around on the internet for a long time and know these things are scams without being ripped off. There's thousands of warnings about spam scams and phishers, everyone who read techcrunch or similar sites likely knew they were scams on the first email they ever received of the nature.