It would be nice if each resource page had a 'auto attribute' copy and paste functionality.  The benefits of this, is that it would make it easy for developers to give credit to content creators (and links back to the site!).

Or, this information could even include it with the downloaded file in a standardized format.

For example, on each page you could have a text area that had:
 
    File Name: HelloWorld.jpg

    Author: Jim Bob

    License: CC-0

    Legal: Additional Legal or copyright info here.

    Open Game Art Link: http://opengameart.org/HelloWorld

    Author's Link: http://jimbobisawesome.com/HelloWorld

    Author's Comment: Anything they want to put here.
   

 It would benefit everyone.

* Developers would have a nice format to attribute credits (and generally make their lives easier)

* Content Creators would get proper attribute and links/traffic.

* OpenGameArt would get traffic for helping support both Game Developers and Contain Creators.

 * I'll chip in a few bucks to make it happen.  (I'm not sure what the development cost of this would be, but throw a number out there)