Now they are back with this news:
The server that powers this site has suffered a catastrophic hard drive crash and there are no recent backups. We've lost thousands of URLs. If you have any weblog-safe URLs that aren't in the database (or a copy of the urlarchive.txt database), please let us know.If you're feeling generous, you'd be doing us all a favor to help out any way you can.If you'd like to help support us as we rebuild this and our other sites, feel free to make a donation.