Esquire, the magazine, put up a personals-ad website for people who are looking for a partner but are willing to be brutally honest about themselves. Fascinating reading:
http://www.esquire.com/brutal
Would you be willing to be brutally honest in a personals ad? I think I would, if only because I'd rather take the slim chance of finding one person I was compatible with than fudge the truth and date a few women who I knew I wouldn't work out with (even if I knew I could get them into bed a few times anyway).
This is a non-issue for me now because I'm married, but I do admire people who are willing to be honest about themselves, even if the odds are long.