FTP is much more efficient, and FTP has been around since the early days of the Internet way before HTTP was even thought of. Since FTP has been the standard for so long, there are many Web designers that have setup "FTP scripts", or command line tools to upload any changes to their pages.
When you have a web site with 300,000 pages, and you need to upload 300 of them, it's much more efficient to let a script do it then to browse through Internet Explorer and uploading them one at a time!
Dan
MCSE/NT, MCSE/2000, Comptia Network+, Comptia A+, CCA
CCIE Written (No, Not a CCIE Yet)
Home Networking Blog:
http://homenetworkhelp-bigdaninhsnc.blogspot.com/
CCIE Study Blog:
http://dansccie.blogspot.com/