In my thread in CS about Hawaiian pizza, I rather whimsically mentioned that eating it is like going to hookers -- everybody knows it's common, but practically no one admits to it.
That got me thinking -- look in any "alternative" paper, and there's more ads for whores than anything else. I've lived near strolls, and they were sure busy. But are there any reliable statistics on what proportion of men actually avail themselves of these services? I have trouble believing it's only four really rich and horny guys.