It's a scam. You get a lot of emails from different women calling you gorgeous, sexy, they like your pics, etc... saying they really want to get to know you, asking to chat. You pay to upgrade (to reply you have to pay) and your emails are never returned. And "coincidentally", you never get any new emails from new women after you upgrade either.
I have dated several women on that site and I have had nothing but good experiences. I would give that site a thumbs up.