Declined 76561198059945141(Rick Astley)

Victim:
steamID: CupCake™
steamID32: STEAM_0:0:35788172
steamID64: http://steamcommunity.com/profiles/76561198031842072
customURL:
steamrepURL: http://steamrep.com/profiles/76561198031842072

Scammer:
steamID: Rick Astley
steamID32: STEAM_0:1:49839706
steamID64: http://steamcommunity.com/profiles/76561198059945141
customURL:
steamrepURL: http://steamrep.com/profiles/76561198059945141

Description:
Pretend to sell games cd-keys for tf2 items but got scam for giving me the fake cd-key and give a me a video to rick-roll video.

http://steamcommunity.com/id/"your steam id here"/inventoryhistory/ , take screenshots

You mean take screenshot of my backpack ?

take screenshots of your trade.

The trade almost pass a few hours & i did not take any screenshots , is it possible to view trade history ?

Please read this guide on how to take screenshots on your trade inventory history:
http://forums.steamrep.com/threads/howto-provide-evidence-with-screenshots.3488/

In addition, please post your screenshots here. Thanks!

Sorry but can i ask something , the person have deleted me as friend and i cant find information about i added him as a friend but my trade history have show that i traded him before but it won't expand out what items i have traded with him like what the thread you posted have show .

i said http://steamcommunity.com/id/"put here your id"/inventoryhistory/ , if you will add your id, you will see trade history

i found the trade history but it does not show what items i have traded with that person does it still count ?

if it looks like http://i.imgur.com/x3knL.png you need it.

i found my trade history but i just cant expand it out like the person did in the picture .

use programm that making screenshot's , or just press "prt screen" button on your keyboard, and then go to paint and press "ctrl+v"

http://imgur.com/ioLXE < -- trade history with the scammer today.

Do you have a screenshot of the chat? That would be helpfull too.

Sorry but i do not have a screenshot of a chat ... the only thing i can find is the trade history from the image i posted just now.

Unfortunately, there is not enough information in the screenshot for us to mark this user. In future, it is wise to avoid trades for CD Keys and only trade for games you receive via a steam trade only.

I am sorry for your loss, good luck in the future.