Scam site. You pay a fee to the site in order to exchange instant messages with a girl that claims to want to meet you. The fee is a percent of the escort fee the girl is asking. So if she asks for $200 you're paying the website about $30 just to be able to instant message her: AND SHE PROBABLY ISNT REAL!
The website needs girls to ask to meet you. Then when you accept their offer, the website gets a fee and let's yoli instant message each other. This suggests it is fake/scam/website owners who are pretending to be females in order to lure you to pay the fees.
Of course from time to time there is a girl who signs up for the site. But you won't be able to tell the difference and you also don't know if the real girl will ever really meet you!
I joined and have spent perhaps $150 in the last two years for "credits". I never hooked up with anyone and 99% of the girls were fake/scam/men posing as women. Why would men pose? Because they work for the website and getting you to purchase credits brings money into the website. So they pose. They use fake pictures etc.