Hello,
I have just completed an online utility that would allow fanfiction authors to upload their fanfics to MediaMiner.org.
The hope is to create searchable database of fanfics for people to browse and read. Hopefully it will be quite a bit more stable then
Fanfiction.net, which is unfortunately down. You'll find that MediaMiner's fanfiction section has all the same features the Fanfiction.net had and a few
newones.
So, if you need a place to store your fanfic visit: http://www.mediaminer.org/fanfic/, if you come across any bugs or have any suggestions just drop me an email.
P.S. At this point there are no fanfics submitted yet, but hopefully with your help that will change :)