Christian Rudder is one of the founders of OkCupid and was the author of the
OkTrends blog.
The book is, overall, fascinating and a fun read. Is it perfect? No, but I'll gladly browse it again. And I'll have to if I want to find any of the data I read about, since the organization of the material leaves something to be desired. Finding the interesting data is hard. (Like the diagram that shows straight men always prefer a 20-year old woman, while women prefer a man of their own age + 5 -- well, it shows that if you make certain probably-not-true assumptions about human behaviour and the data. Anyway. Finding this diagram? Hard.)
The last few chapters (e.g., the one on "personal branding") are worthless drivel.