The FingerFans website was down for about one day but is coming back up now. What happened was an administrator glitch that wiped the files off the domain. Luckily the automated twice-daily backups were readily available, so currently all files are being written back to the domain.
The wiki was affected in terms of code and content, since both is stored as files on the domain. The wiki is not very active, so nothing was lost.
The forum was only affected in terms of code, since the posts are stored in a database that was not affected. Nothing was lost here, either.
I did receive some mails from concerned users. Thanks for your quick reactions - but I was quicker