Where in the world is Eduardo Saverin (story from early Facebook) (larrycheng.com)

Looks like Ben Mezrich (fiction author who sold a lot better when he relabeled his books nonfiction: http://www.boston.com/bostonglobe/ideas/articles/2008/04/06/...) is using Severin as a source for his next book: http://www.crainsnewyork.com/article/20080522/FREE/760602535