Stopsign--- Scammer!!

Scammer's profile link: http://www.sythe.org/members/356106-stopsign.html
Explanation of the trade: I was to sell my account for $400 to another guy, Thompson, (don't know what his account is but I assume he's the same person). Stopsign was to be the middleman, and I trusted him because of his $250 donation and 100+ vouches.
How they scammed: As soon as I gave him my account info, he blocked me on skype from both of the accounts.
Sythe PM picture: Didn't pm on sythe, went directly to skype.
Skype profile ID & conversation pictures: http://imgur.com/031eSNZ
http://imgur.com/CcD7Nds http://imgur.com/Wb7VbfI
Other relevant trade screenshots:

 

This is likely an imposter as he isn't an OMM and wouldn't advertise himself as such. Could you show the skype id like the stickies state?

 

Skype is stopsign_sythe

Skype of the other scammer is mj.cool123

 

Stopsign.Sythe is his skype unfortunately not stopsign_sythe. Remember to always request a pm when trading to unsure you're not trading an imposter