[Cooker] rsync'ing cooker

[Mathew R. Sprague]

I'm a little slow but I just found this amazing application called rsync ;  )

I was just wondering if the following command  is the correct way to use this
to the fullest effect.
rsync  -avr ftp.sunet.se::pub/Linux/distributions/mandrake-devel/cooker/
/mnt/Cooker/

Do I need the -r flag or -u and -t flags? Will these speed up the rsync
transfer? I also notice rmdir messages for : directory not empty. Do I need the
--force option or can I ignore them?