Okay guys, it's still work in progress, but I made a little site with a sorted grid icon collection:
http://www.steamgrids.com/
You could really help me out by uploading as many of your icons as possible. Unfortunately, it's limited to one file at a time in order to prevent spam.
I'm uploading images as we speak, so almost everything in this thread should be there once I'm done.
I will only use quality images however, so some images might be lost. Please don't take this personal in any way.
Excellent. Thanks for making this. Didn't realize you had them organized into individual galleries. That's even better.