Mark Zuckerberg famously hatched his plans for Facebook while a student at Harvard University. But one of his room-mates has chosen a completely different career path.

Arie Hasit, who was the fourth person to sign on to the social media site after Zuckerberg and his fellow-founders, has just been ordained as a Conservative rabbi in Jerusalem, according to AP.

Rabbi Hasit, 33, who wrote a thesis on Israeli hip-hop at university, has at least benefited from Facebook in one respect, doing well with the shares he bought in the company four years ago.