I've looked back at this user's post history and found another bounty thread that he had run and is currently deleted (archive found). Have glanced at the site and no information about the project while the promotion is running (most likely a scam project too). I agree with the suggestion of raising the warning flag for this user.
I PMed him before, but I'm afraid it will be long for him to be active again until he publishes another shady bounty.

Flag link: https://bitcointalk.org/index.php?action=trust;flag=2439
Flag links have also been added to the OP