Mirroring
What exactly is mirroring? Why I'm glad you asked. Mirroring a file simply means uploading a file that has already been uploaded, somewhere else. A mirror is exactly the same as a regular share; it is just something that has already been shared. Generally this could mean that if someone posted a link to a share on rapidshare, you could download the file, upload it to mediafire and post your new link that would be called a 'mirror'.
However, mirroring isn't limited to the 'one-click' file sharing sites like rapidshare. You could for instance download something from rapidshare then post it on the c4m FTP server or viceversa.
For more info on the different ways to share a file, go here
For how to prepare a file for rapidshare, go here.
Why mirror? Mirroring is done for a number of reasons. The biggest reason is convenience. You see, some people in certain countries or for other reasons can't download from certain places(like rapidshare). By posting a link to another site as well, people can have their pick of what is most convenient for them. Some people prefer FTP to rapidshare, some people don't. By mirroring a file in that fashion, you give them the option.
Another great reason to mirror is to show respect. Someone went through all the work to post the file in the first place; by mirroring it you are showing much more respect than just saying 'thanks'.
Finally, some links/sources go dead after a while. Anything posted by a non-premium user on rapidshare will eventually be erased. By mirroring a file you extend it's life span.
Mirroring is so easy.
How to mirror a file:
1)Find a file you want to mirror.
2)Download the file. All you do is download all the pieces to a file.
3)Upload them somewhere else. If you got a file from rapidshare, upload it to mediafire. If you got it from mediafire, upload to rapidshare.
Or
If you got a file from rapidshare, upload it to the c4m FTP server. If you got something off the server, upload it to rapidshare.
There is an infinite amount of possibilities. Plus, most of the compressing/encrypting/splitting work is usually done for you.