I have been thinking exactly the same thing. I was suspicious the minute EVERY single man that emailed me was very cute and yes, from the US. It is not that I am putting myself down, but the level of good looking men on there who contacted me is bit unrealistic. I even put on my profile that I was not paying up until I felt that the people at the end of the email were real - sent it for 'approval' and not heard back - funny that.
There must be a way to find out...