INTRODUCTION TO FTP
FTP stands for the File transfer protocol and is used to transfer files between an FTP server and another computer. In the past, FTP was much more common than it is today and was the dominant file transfer mechanism on the Internet. If you needed to transfer files between two computers, you would use FTP to do so. FTP is still very popular today when a service requires that a lot of files be hosted for other to people to download. FTP also tends to be faster than other contemporary methods of transferring files because it was designed to do so.
Even more important, FTP support Automatic Resume. This means that if you are downloading the latest new game demo that is over 600 megs, and for some reason the download stops in the middle of the transfer, the ftp client will attempt to on the next download of the same file, to continue from where you left off. This feature can save you a huge amount of time but is generally only found in specialized FTP client software and not in your browser software.