Remote uploading

Remote uploading means that a file gets downloaded by one server and gets uploaded back to another server, without 1 single mb being downloaded to your PC.

Services who provide this option

Rapidshare.com
Megashares.com
Netload.in
Megaupload.com (only for premium users)
Filefactory (only for premium users)
There are a lot more, but those are the most important.

If you want to find some services which support remote uploading, try googling "url upload".

The problem with this is, the links that are remoted need to be so-called "direct download links" meaning the download immedeately starts after clicking the link.
Most filehosting services won't provide you with DDLs (definately not if you're a free user). So remoting from 1 filehosting service to another isn't obvious.

Some sites will remote uploads for u to different servers automatically.
If you've already got a DDL you should try:

massmirror.com
mirrorit.de

If you're planning one uploading the file yourself try:

sharebee.com

Types of DDLs

There are a few types of DDLs:

1. You just find a regular http server with files stored on it, and you copy the complete path to the file, this would look like: http://servername.net/filename.zip
2. A ftp link, if the ftp server requires a login & password you should edit your link like this: ftp://username:pass@servername.net/filename.zip
3. Last but not least: creating a DDL using files you uploaded on a filehosting service server. Most likely you will need to enter a captcha (the number in a picture for instance) and you'll have to wait a certain amount of time. If you have a premium account, you should copy the premium link and edit it in the way like the ftp link. I'll go more into detail on some single filehosting services later.