.. I've never seen this before.. anyone ever try it?

Here is an example

Late night treat? I love to play and I'm good at it. I'm visiting for a couple of weeks, and I don't do this very often, so if you're interested, now's the time. I'm available tonight until 2 AM. I just need some fun (with benefits) this week. Fun, easy, damn good (I like it). 200 reasons to get everything all inclusive. Please no emails (they're traceable). Use the private text messaging service, it's safe and anonymous. Just text 'PRIVATE' to 22428, Answer Y (yes) to get in and ask for 'jana4', that's me and I'll text chat you back with specifics. I'm free now, let's go.

From all reports its a scam. Depending on the make of cellphone you could even get a virus back in response. If the girl doesnt give a normal phone number (or possibly an email address) then she isnt interested in seeing clients.