They always just look dodgy to me. The one time I did attempt a booking, the girl in question wasn't at the flat despite being on calendar so the bloke on the phone was going to go an collect her. I just didn't get a good vibe and declined to book.
I'm also irrationally irritated by the way the girls names often have random extra letters in them - Branddy, Viicky and so on!
On the plus side, they seem to be honest about the girl's nationalities and call a Romanian a Romanian.