I was able to signup last night, and register for the challenge. Then the site went back down. I can now login and check status and everything like that, so it seems the challenge is working. I’ll be on my 360 all afternoon trying to rack up 1500 points as quick as possible

[Update] The site is up and running now, but you have to be sure to register and then�join the contest, I forgot to join and wasted 160 points I had earned.