mod_secdownload is a lighttpd module that provide secure download of files. The file download link expire after specified amount of time. This is very usefull for file hosting and video sharing sites to prevent bandwidth stalers (hotlinking of files). mod_auth_token
After two days of getting new server for free file hosting site, the bandwidth usage average reached at 24 Mbps average. This server have Core2Duo with 4 GB RAM, lighttpd web server with mod_secdownload. Server load is $0.4 now.
I have brought second 50 Mbps unmetered dedicated server. Server configuration is Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz 4 GB RAM 500 GB SATA Hard Disk 1 Gbit connection with 50 Mbps unmetered. This is the most costly server
BizHat started Free File Hosting that allow users to upload files of size upto 200 MB. There is no file size limits. You can upload any number of files and use as much as storage you need. You will also