The thing about this is, lots and lots of old fanfic are held there. Some of them are sites that are ghost-town-like because their owners are gone for whatever reason. If you've got fanfic on a geocities site, please, grab it and save it. There are so many archives out there now that can be used.
And if you know of favorite stories on geocities sites that may vanish forever, now is the time to grab that stuff.