It seems two more highly used file sharing sites also go down after the MegaUpload incident. However they weren't slammed like the MegaUpload, it seems to be voluntary until they both reorganize.
It seems everyone in the file sharing business has been laying bricks and decided to make sure they're files are above board.
Will other sites go down? Only time (or feds) will tell.
EDIT: Fileserve has just gone down too.
EDIT 2:
Megaupload – Closed
Fileserve – Stopped filesharing. You can only download your own files. Deleting multiple files. Banning Premium accounts. Closed Affiliate Program.
Filesonic – Stopped filesharing. You can only download your own files. Closed Affiliate Program. Changed server location Jan 22, 2012. Taken down it's Facebook page Now using Digital fingerprinting. Files are being deleted as soon as uploaded (as Hotfile did).
VideoBB – Closed Affiliate Program.
Filepost – Started suspending accounts with infringing material (as Hotfile did)
Uploaded.to – Blocked U.S. access.
Videozer – Closed Affiliate Program.
Filejungle – Owned by Fileserve (same as above). Testing USA IP addresses
blocking.
Uploadstation – Owned by Fileserve (same as above). Testing USA IP addresses blocking.