It has moved (for the second time) and is now hosted on Greyhawk Online. Here is what Greyhawk Online say about GLoG on their homepage:
If you already use GLoG, make sure you update your bookmarks.Greyhawk Online wrote:The Administrators and Contributors of GreyhawkOnline.com™ are proud to announce the opening of the Greyhawk Wiki!! The hard work of many contributors over the last decade have allowed the GH Wiki to persist, even after losing mirror sites and other setbacks!
If you have not used GLoG yet, check it out, as it has a ton of information.
(I'm not sure if all the accounts have been migrated over, but I'm guessing that - if they have - that some people might have their password saved in a cookie that only works with the old website. I'm guessing there is a way to get your password sent back out to you, but I've not tried to access my own account yet. If I find out, I'll edit this post. If anyone else finds out first, please post the details in the topic, and I'll get this OP updated.)