AdWordsPro Sarah, an official Google representative, announced in the Google AdWords Help forums that they want to give Google AdWords Professionals, those that are certified by Google, special logos or labels under their profile names in the forums.

Sarah said:

I cannot help but wonder if my post about Google certified SEOs and top contributors in the forums had something to do with this idea?

So if you are a GAP, then go to the forums and let Sarah know, so you can get the special logo by your name.

Forum discussion at Google AdWords Help.