You guys might b aware of this one, but I got an email from a guy after I sold an electronics Item that said:  'Hey, do you have my conformation number?'  'Please respond!'  
It looked identical to ebay question mail you get in your box.  However, I went to ebay, and I didn't have this in my messages.
When I went back to ebay, I looked at the message and the guys email (in small print) said [greensgarage@ehay-not ebay.}  you really had to look at it.   I guess he was trying to either interceppt the package or steal my acct.