Was wondering that myself. The game provides www.blurbetafeedback.com but I haven't actually gone there yet. . . too busy racing. I'm just assuming that's probably where you'll find some feed back options.
" How do we post feedback to get our 3 beta keys? I'd like to give something back...you know, to the little people. :) "
Yeah, that website will ultimately get you to a Blue MP Beta Survey you can take. I'm betting that survey results in new codes to share with people. I'm looking to secure two for a couple of my buddies but if not I bet there will be extras floating around here I can give them.