(Which I, after some thought, managed to parse as 25th of January, 2012. Darn, Month/Day/Year has to be about the most unintuitive date format you can find.)
It's how we say it. In conversation one says "January 25th, 2012" not "the 25th of January, 2012".
In conversation one says "January 25th, 2012" not "the 25th of January, 2012".
Depends on the country.
A challenge recently posted on Innocentive seemed to me like something that may interest many LWers: "Models Motivating and Supporting Altruism Within Communities", with a grand prize of $8000. To quote from the challenge:
Further details are available on innocentive.com. I think that it would be a nice opportunity for our LW decision theory experts.
[For anybody who decides to participate: the links I provided contain a referral string so that, in case you win a prize, I can match your donation to the SIAI with the same fraction of my referral award ;) Please use them to register.]