What would like you in a File Downloader Script?

I am in the process of creating a File Download PHP Script.

I would like to get some ideas as to what good "features" I should have.

Currently this is what I have in mind:

Main Features:
---------------
* Plug-n-Play Site
* Complete Download System
* Ability to add categories (unlimited tree)
* Optional Category Image
* Optional Mod-Rewrite (Easy URLs)
* Optional Image Preview (thumbnail) for Image Files
* Directories can act as Image gallery, with slideshows
* Tell a Friend system for all files
* Optional Anonymous uploads to system
-> Limit file size and extension types
-> Enable Report of "bad files"

Optional user system:
---------------------
* Allow users to sign-up
* Allow users to upload files
* Limit File Size and Extensions
* Allow users to have private albums as well
* Limit upload capacity for users
* Allow users to communicate via email and/or PM
* Enable/Disable profile page for users with their statistics

FrontPage:
----------
* Easy editable index.php template (changes reflect entire site)
* TOS, Privacy Policy and FAQ pages to reflect your site configuration
* User registration, forgot pass, login and contact us pages
* Optional Image Captcha for Contact page
* Optional Email Confirmation

Administrator CP:
-----------------
* Complete administrator control panel
* User Management Option
* File Management Option

Advertising System:
-------------------
* Built in advertisement system, image/flash banners
* Built in contextual advertisement system (Adsense, YPN, Adbrite, etc)

I already finished installation procedure and template, ready for coding (will do it in a week or so, too many midterms).

Peace,

 

Oo! It should increase upload/download rate by 100%

 

You mean specify the download upload speed for each user?

I thought it was hard till I saw this function:

<?php

$file = "test.mp3"; // file to be send to the client
$speed = 8.5; // 8,5 kb/s download rate limit

if(file_exists($file) && is_file($file)) {

   header("Cache-control: private");
   header("Content-Type: application/octet-stream"); 
   header("Content-Length: ".filesize($file));
   header("Content-Disposition: filename=$file" . "%20"); 

   flush();

   $fd = fopen($file, "r");
   while(!feof($fd)) {
		 echo fread($fd, round($speed*1024));
	   flush();
	   sleep(1);
   }
   fclose ($fd);

}
?>

PHP:

Peace,

 

1. How many people have downloaded a certain file.
2. User rating system for that file plus reviews/testimonials.
3. Add Technorati-type tags for each downloadable file page.