I was behind someone in the line at our small post office yesterday who was either a scammer or was caught in a scam, I think. [Small town, small post office, those in line hear pretty much everything that is happening at the window.]
The employee at the window told the guy in front of me that the post master wanted to talk with him. A few seconds later the man presumed to be the postmaster appeared with a large stack of mailing envelopes that had official looking address stickers on them.
The postmaster asked the man why some of the envelopes had different return addresses. I'm not sure why that was important. The man ahead of me said that these mailings were all from his new work-at-home job. Then the postmaster told him that some of the supposedly prepaid address labels were genuine, and some were copies. The man told the post master that all of the materials had been supplied to him by his job.
At that point the person behind me asked me a question, and I didn't hear the rest of the exchange. I can understand the scam of counterfeit prepaid address labels, but I wonder why the return address was important. I've heard that some of these work from home jobs are a scam in themselves, but I'm not sure why.