Seems like the tragedy of Megaupload is starting to creep up on other file sharing sites. I just noticed FileSonic disabled their sharing functionality and stating that only users that uploaded those same content will be able to retrieve them back.
The most noticeable feature is its log in form. So there is no way around this but to look for other file sharing sites.
Too bad. I used to like this site as their page is not too cluttered unlike other file sharing sites. Heck, even Rapidshare has too much graphics on the page now.
Good luck with your future FileSonic.