Adding my congrats, Shoe!  Hey, have you been watching Cosmos: A Spacetime Odyssey?  Last week's episode made me think of you, because they told the story of Halley, Newton, and the publication of the Principia, and I remembered seeing a clip about it on HH!   How cool is it that the show was educating kids way before Cosmos.  Anyway, I'm proud of you and keep up the good work!