I'm in the same boat as KP. Got this email at work at 2:52 AM: "I'm 26 female :). Txt me if you wanna, my num: +1 720-686-5234" with the subject "Any plans for tonight?"
I received a response for a craigslist add from this number using the name Austun Wilson Jr. I believe they try to get your name and cell number for sites that sell the information