If I don't know you, or I haven't played any games with you, I won't add you. Also don't add me for trades. If you need something write a comment and depending on the situation I will add you as friend. Writing "added for trade" is not enough - like I said I don't add for trades, maybe write more about which item you want and what you would pay for it.
Items listed on backpack.tf should be accepted automatically if the correct amount of metal is in the trade offer.
Don't add me for trading - If you need something write a comment and depending on the situation I will accept your friend request.
I won't accept escrow offers without a huge overpay.
Also if you want to buy one of the painted hats I sell. I accept item overpay. But overpay means that you pay more in item worth than the price of my item. Paints, strange parts and so on do add value, but I don't take the backpack.tf price.