I guess ff.net has been lasting longer than expected of websites...

...but it would still be a loss if it went down. According to this reddit thread, the increasing problems and neglect have become really acute now. Though it apparently still works (more or less) for others.

I already downloaded the fic I had in my bookmarks there a while ago, if it hadn't also been posted to AO3, but it was very tedious, even with Calibre, because you need to set the time interval between downloads lengthy or it fails.

Anyway, in case you still have favorite stories that were posted there, that you haven't saved, time might be running out on them.