Filefront has a note on their front page that they will be suspending their site as of March 30th. Clicking through reveals this message.

"We regret to inform you that we are forced to indefinitely suspend the FileFront site operations on March 30, 2009. If you have uploaded files, images or posted blogs, or if you would like to download some of your favorite files, please take this opportunity to download them before March 30th when the site will be suspended.

We would like to give a warm thank you to all of you who have been part of the FileFront communities we have built together. Your support has had a meaningful impact for all of us here at FileFront. Again, we want to give you a sincere “thank you” for your support over the years and wish you all the very best. "

Ziff Davis, the owner of Filefront, recently sold most of its 1up.com web sites to the Ugo subsidiary of Hearst Corporation and released an internal memo stating the company "will determine the best ways to leverage the scale and functionality of this digital propert to expand our business position."

I obviously am not involved with the dealings of Ziff Davis, but if I read that right, after Hearst was not interested in purchasing Filefront, they were still looking for a buyer. After a time, and figured out they were not going to find a buyer, closing the site was their only alternative.

Source: Filefront