Improper Format Just got scammed

Well i wasnt really paying attention wanted to believe in humanity and that's what happens
Here's his id: http://steamrep.com/profiles/76561198012643837 forgot to check it before the trade... my own fault i guess, The funny part is that I first said no and then added him back because my friend wanted a game he offered
heres a screenie http://i.imgur.com/JJwTA8x.jpg
btw he offered his assasins screed for my sr3

http://forums.steamrep.com/threads/...-look-at-acceptable-format-before-posting.51/

He already seems to be tagged on SteamREP though.. If you already knew this, you should not trade with scammers, ever.

yeah.. i forgot to check steamrep.. and obviously i didnt know he was a scammer and sorry about the format.