Very nice! My only thought is that I wish you'd update it every week with new designs, and then sort of open it up so others can contribute their logo's for others to use, something like a logo-bazaar with regular updates. I think you'd attract quite a few artists willing to participate akin to DeviantArt, although with a commercial twist.

Bookmarked for another visit in a few months just to see what sort of progress you'll have made .. good luck!