I don't recall that I did this, but I remember a very smart ER doctor I used to work with running some basic statistics against Facebook in 2006-2008 which iden

I don't recall that I did this, but I remember a very smart ER doctor I used to work with running some basic statistics against Facebook in 2006-2008 which identified singles by gender and age categories. The year may be wrong, but based on what I was studying at the time, and my relationship status, that's probably the timeframe.