Believe it or not, Facebook Co-Founder, Eduardo Saverin, is living in Singapore (since last year) and has been seen visiting Butter Factory with friends.
I read about this whereabout in Straits Times and actually Straits Times linked their story to TechCrunch. So, it seems that he is enjoying himself in Singapore and recently been funding Facebook games developer.
For those who watched movie, The Social Network, might have a better impression of him.
So, if you are in Singapore, you might just bump into him. Here is a video clip of Rachael Kum (Miss Universe Singapore 2009) and Eduardo Saverin. He is giving advise to entrepreneurs.
BTW, he is still the co-founder of Facebook although he sued Mark Zuckerberg a few years ago. He is now having 5% of Facebook shares which makes him a billionaire.