That´s a good example, he puts keys for 3 ref but in the notes he says 3.33 ref per key, traders to that to get more views on they r trades, while I dont agree with it, I supose that´s why they do it, If it looks like a good deal at first glance more people will chek the trade.

This is actually something I have wished steam had done long time ago, but i doubt it will end with money transactions outside steam, because your funds get stuck in your steam wallet and you can only use it to buy games and stuff, if you could transfer that money to your bank account then it would defenitly take over the money transactions market.
Theres a ton of good stuff you can point with it, the only downside I can remember is when you can buy keys at Steam Community Market for 1,20 dollars or so why would you buy them at the store for 2.50 dollars, so probably there will be less keys entering the market and just the same keys beyng sold and resold, wich will impact key metal value even more.

I´m pretty sure tradable ones are more common then the untradable ones, your isnt rare im sorry to say it D :

I get your point, quickbuyers with c/os for a long period of time isn´t really quickbuyng :D

Price manipulating is just wrong, I don't feel bad at all for you :p

lol its not a suggestion, it was implemented :p

You can now easily tell if a trader is online, or its just an autobump, without the need of entering each trade to double chek, thks for this :]]

Theres a lot of people trying to manipulate prices in tf2, its easy just chek posts of people selling rare items, you will see a ton of posts like dont let this go cheap I also have 1 and this will be worth 100 buds in xmas\halloween whatever.

I dont understand why valve released the salvaged crates in first place, i mean everyone likes stranges but just a few pro traders can afford those stranges that cost a small fortune.

I think outpost should have some sort of rule to prevent this, for example I was surfing in outpost and this dude was selling 1 ebe for 13 keys, and someone posted in his trade saying don't let this go cheap this will be 1 bud + in xmas, then I checked the bp of the dude that commented and he had 5 ebes and was selling them at 1 bud each.
People posting in others trades commenting don't let this go cheap or this will be worth buds in halloween or xmas or whatever are trying to manipulate the market if they also have the same item.