RIP, Dan. I work with a lot of very smart people. So, I've gotten a bit used to it and don't normally find myself in awe of many people's intelligence. Dan was a person that I was absolutely in awe of. The fist time I met him very long ago (almost 20 years), he showed me code he wrote to share movies through abused DNS slaves... building a p2p network like Napser/Gnutella from the technology. No one had ever thought of such a thing. I don't think anyone else in the world knew DNS well enough to be inspired to think of it. He was so kind and friendly to everyone. It was fun to talk with him about tech/security because he had such enthusiasm and excitement... like a little kid on Christmas or a puppy. :) I learned a lot from him. I have nothing but great memories of him. I remember once when someone hacked him. He even took that in good humor and didn't let it bother him.