I was "buying" some mobile phones from someone I knew was a scammer, and when I told him I doubted his legitimacy, he came up with a way to "prove" it. He wanted payment through Western Union of course, so he showed me an MTCN number and a sender name, so that I could track the transfer on the WU website. He said this was a payment that someone else had sent him... of course, that does not prove anything, because by tracking it, all you can find out is that a payment was sent from a certain name, not how much it was for or who it was sent to.
So I had a friend contact another scammer in Nigeria, and ask him to pick up the payment (which he was quite capable of despite only having the MTCN and sender name) so the other scammer would not be able to use it as "proof" anymore. Turns out the payment was only $5 sent to and from the same person
![[em2]](http://img.alibaba.com/images/eng/style/icon/emoticons_laugh.gif)
I seriously hope noone has fallen for this one. It's probably an old trick but this is the first time I've seen it. The MTCN was 2606481669 and the sender name was Robert Martinez.