You do the math, dear
I'm a big fan of OK Cupid's blog articles, where they number-crunch their own data and, in doing so, expose fascinating patterns of behaviour among daters.
This recent post on the benefits of dating older woman (something that guys on OKC don't seem that inclined to do) is a case in point.
What I found really interesting though, was that the median figures for the lowest aged women that men of different ages would consider going out with follows almost exactly the old rule of thumb "half your age plus seven".
I can find lots of references to this 'rule' online, but no indication as to where it came from. Anyone have any idea?