As a teenager I and a friend once posted a fake profile claiming we were two female nurses who lived together and wanted a guy to help spice up our relationship. Bear in mind, we didn't include any picture at all. It was just to see what would happen, we didn't try to contact anyone who wrote to the profile (although we joked about asking them all to show up in the same place with a red rose or something.)
Frankly, I thought it was an obvious attempt to troll, but that didn't stop us from getting thousands of emails over the next few months, and I don't remember many of them being of the "bait the troll" kind.
Most of them started off with something like "I know this is probably a fake profile, but...".
We got some guys who wrote out entire porn scenarios using our fake names, others who just sent four words (hey, how r u?), others who listed all their awesome qualities, and others who tried making charming jokes about popular culture (which seems to be the standard for dating site come-ons).
We had several guys who wouldn't take no answer for no, and wrote to us multiple times, and a couple of guys who tried the old, "I'm really really pathetic and if you don't let me have sex with you, I might remain pathetic."
Some were creepy, some were sweet, some were um, quite a bit older than the fake girls they were wooing, others were younger.
We only read the ones that seemed interesting in the end because there were hundreds of them.
So, yeah, I think you might get people thinking the profile is an attempt to troll, but honestly, with a chance at no-strings sex, I don't think you'd lack for hopeful replies.