trading keys

Try a middle man.

Otherwise it's pretty much a gigantic risk.

There is no way to trade keys 'safely', which is why Steam doesn't recommend trading keys.

Also this

It's against the terms of service to trade, sell or exchange keys obtained from humble bundles. You shouldn't do it.

hear my Advise and don`t trade Keys , Even if the offer soo GREET ! ( Skyrim for metro 2033 ) , Totally Unsafe .

http://www.steamtrades.com/ ? also u can gift them, i see u got 0 gifts here, and karma its a big factor for win giveaways here.

You're not going to find much value for any of those keys right now, because you can get them all for $1.

If trading on Steamtrades, pay attention to the rep of the other traders. Someone with higher rep (and hopefully comments about being trustable with keys) would be a good sign. Be prepared to go first though as you've got no rep yet.

Trading keys is always at your own risks however, no matter who you end up trading with. Just remember, if the offer seems too good to be true, it probably is.

may i have snapshot? :o?

Get a middle man and have both parties use team view to watch them activate the key.

Trading keys is never "safe" and is not encouraged by Valve at all.
It's all about trust.

Possible signs for a scam:
1) offer is too good to be true
2) other person is adding you directly and links you a steamrep / steamtrades profile that does not match his Steam ID (always check!)
3) other person's Steam account
3) a) is 5 days old
3) b) is private
3) c) has only 7 friends
3) d) has only 3 games

but on the other hand: if the other person has 300 games in his library and a 2 digit steamtrades rep, you should not insists that the other person goes first if you have less rep.

TL;DR: only trade stuff that can be put in the trade window, trade everything else at your own risk.

check their rep

go on this site before trading with a guy: http://steamrep.com/ if he is a scammer, he might allready be report so dont trade with him..

Please, I've almost exclusively traded keys on steamrep, and I've never been scammed and only a few have even attempted (though probably more when I was first starting). Using a middleman is a lot of noise and is difficult and unneccessary. Here are some guidelines -

1. If people add you as opposed to you adding them, ask for their steamtrades account and then click on their profile from there and make sure you're friends with the account and that is the person you're talking to. If they say they don't have a steamtrades or try to point to some other source of rep, MAKE THEM GO FIRST OR DO NOT TRADE

2. The person with the lower rep should always go first. When you first start out, only trade keys with high-rep (20+) traders. It's usually safe to go first with these guys.

3. Even if a deal is sketchy, you're not scammed until you give your key. So if you make them go first and you fully activate theirs before sending yours, you can avoid being scammed.