1 I did actually announce this on the Mnemnosyne and Anki mailing lists, but I received no responses. :(
Whups! So you're right. I replied with news about the verdict.
#2 is definitely something you should try. If there were no real prize, I think people might laugh at an attempt for the main page, but with that much skin in the game... at least, I would expect LessWrongers to respect someone putting a good chunk of money where their mouth is. They seem to've in the past, with reports about bets, prediction market trades, and SIAI donations all getting upvoted.
I suspect you feel about #6 the same way you feel about #2 - that it's overreaching and arrogant. That is something you may want to look into if you feel the same way in a second contest of equivalent quality. (I understand 'rejection therapy' may help with that.)
EDIT: I've spent a fair bit of time messing with AdWords for my own purposes, and I think I have a handle on the basics, so I'd be willing to help out with future contests as far as that goes.
I think I would feel much more confident about a second prize. In the beginning I didn't have other people helping me do this kind of work, but now I do.
The Spaced Repetition literature review prize for the best new review of the evidence on Spaced Repetition has ended and the judging panel has made its decision. The prize attracted entries from Duke (entry) and Gwern (entry). After reviewing the submissions separately and then discussing them together, the judging panel unanimously judged Gwern's entry to be the best.
With great pleasure, we now award Gwern the prize of $385.
Anki cards for Gwern's review are available as the shared deck "Gwern Spaced Repetition Lit Review". If you have improvements or alternate decks, post them in the comments.
The three judges, BenLowell, Guy Srinivasan and John Salvatier (me), are Seattle LessWrongers who volunteered to judge the contest.
We thank Duke and Gwern for their submissions, as well as users randomwalker, Antisuji, Dr_Manhattan, Benquo, Nick_Roy for contributing to the prize fund.