Several people have written articles on efficient charity -- throwawayaccount_1 has an excellent article hidden away in a comment, as does waitingforgodel. Multifoliaterose promises to write an article "at some point soon" ..., and louie has actually submitted an article to the main LW page.
What I'd like is for throwawayaccount_1, waitingforgodel and multifoliaterose to submit to the main LW articles page. People will read the articles, and hopefully vote more for better articles. Srticles not submitted to the main LW articles page are not eligible for the prize.
Note that it is hard for me to judge which article(s) will actually have the best effect in terms of causing people to make better decisions, so at least some empiricism is desirable. Yes, it isn't perfect, but if anyone has a better suggestion, I am all ears.