The 'Secret shopper' scam is a close second to the 'Car wrap scam'. It's a variation on the fake check scam. You are sent a check, deposit it, and then either buy/ship goods to another location, or are asked to 'evaluate' a Western Union counter at a store. The check appears to clear in 2-3 days. Bounces in 4-5 weeks. The rest you can guess.