Advertisements on Craigslist nationwide as hiring for USPS jobs. It tells you to call a number in Florida and ask for a varying extension. I called this, and the same guy answered each time as a different person. Last time I called it was Eric Gold.
He then asks for $89 plus $20 in shipping to be paid immediately towards "study materials" for a USPS exam. When prompted, he had no explanation as to how this fits in with USPS's hiring procedure. And when questioned further, he became hostile and hung up the phone.
BEWARE. Don't e-mail this ad and don't call the number.