The SL Challenge is closed indefinitely as of 27th March 2011. Taken from the final post:
And so here we are - the end of the SL Challenge. It's been a fantastic 80 weeks and I would like to thank each and every one of you who participated, especially the regulars. I hope that this challenge helped you to experience new styles of racing as well as improve your skills. Maybe even a PB or two? I never thought we would get this far and it has been an absolute pleasure running this challenge. Once again, a massive thank you to everybody - it wouldn't have lasted without you guys. I hope that we can all keep a bit of WipEout HD in our hearts, even if some of us are starting to, or have, moved on.
I'm going to ask Saturn to close this now.