I replied to your friend at http://www.icyworlds.net/post/4402/display .
Hi,
You (or someone from your household) registered a very large number of accounts in a short time, triggering a protection mechanism from the server that will prevent you from registering accounts for a while. I have manually reviewed the trigger, and consider it - to the best of my knowledge - valid.
If this was you, I suggest using some of your older accounts again. If it wasn't (and you are like, in a huge dorm or something) please have your network administrator contact me with the name of their institution, a quick explanation of what interfacing method they use (sNAT, ...) and a rough estimate of how many of their customers may access the site through it, so that any staff and I know what to expect. They can use the contact form for that.
Hope that helps,
Toby