All popular file hosting service like MediaFire, Rapidshare etc has timer on download pages that makes you stare at advertisements before the actual file download link pops up. SkipScreen is a Firefox extension that allows you to skip those timer screens and download stuff directly from your favorite file sharing website.
After you install this Firefox extension, as soon as you open download page you will pop-up that allows direct download of file. During this time, poor download timer could still be running on original download page (who cares, isnt it?). One real blessing for users whole download like hell on the internet!
Related - Skip MegaUpload waiting time & download directly
It supports number of services like: Rapidshare, zShare, MediaFire, Megaupload, Sharebee, Depositfiles, Sendspace, Divshare, Linkbucks. SkipScreen [download FF extension] is still young FF extension, makers might bump up more features and compatibility with other file sharing services. Here is video demo: