Because I'd hate for any guys to find out too late, I'd like to submit this for your education.
http://www.rachelgetsfruity.com
Really, I'd've posted this in nonsense but for the somewhat serious nature of the issue. I like the way it's done. It has fun with an issue that really isn't on many guys minds, bringing it to attention (forgive the pun), while still presenting some worthwhile information.
Oh, and she and I're like this:
You play your cards right, and you can be the thumb.