Perhaps it’s not completely related to the topic of this thread, but I think zip compression could be very useful to backup the whole site. Making a backup with FTP takes sooo long... And we could integrate the "site backup" function with the "db backup" one, to offer a one-click backup function!
The only issue is timeout. I installed Invision Power File Manager (http://www.invisionfilemanager.com/
), which is still free, but I am not able to make a complete zip backup of my site, because it contains a lot of images and the server is slow, so my script goes timeout.
One solution could be "chopping" the zip compression in several parts, and using HTTP reload to repeatedly call the script on each part.