CKurt...I've already had a couple of people ask me about the Hardhat Challenges. I'm actually surprised that folks remember them! I'd love to hear comments from anyone who'd like the challenges to return. If there's enough interest, I'll see what I can do.
ZippyV...sorry, but we don't share exact numbers. I can tell you that the number is > 1 and < 15,000 though. You can kick me at PDC09.