i find that if they are not attractive, and if you ask who they are or for more details, da and Sawasdee will just say "new". NO! really? How about some more info like, how old they are, what is their massage experience, etc.
I know they are new if i asked you for more info on them. If they weren't new, would i be asking who is "xyz"? However, if they are more attractive, they are more likely to send you a pic to entice you.