free L4d2 [W] nothing, you just help me to open 4packs

Hi all,
if youre interested in this, please read everything here.

You have the possibility to receive a free Left 4 Dead 2 for your Steam account. I want to open a 4-pack and here is how you can get your free game. The 4pack gives 3 tradable copies and 1 copy gets activated on your account (this activation is free for you!). So Step-by-step it is like this.
For this you need to be sure that your Steam account purchased at least one game within the last year and more than 1month ago, this is needed because otherwise the 3 extra copies would not be tradable.
Also I want to note, for all new traders (or everyone who doesnt look "trustworthy" for me) which is interested in this, if I think that you look "risky", then I want some security deposit (you will get this back).

I have three 4packs, so I can do this 3 times. First comes, first serves. ONE LEFT

1. You write here a message that youre interested. (This is important! dont straight add me!)
2. You wait until I respond here or straight add you.
3. I will trade you the 4pack.
4. You will activate the 4pack. (If needed, I will receive the security deposit here)
5. You give me the 3 tradable copies from the 4pack. (If I got a security deposit, then youll get it back here)
6. Now you have L4D2, install and play it!