Main advantages are queuing up and scheduling downloads.
Also even with broadband a CD size download can take some time, if you can resume download following a connection glitch it is really useful.
One of the useful things I find in GetRight is its browser, I have found lots of files that way
I know there are better tools for this sort of thing but it is a quick method already in my system tray.
For small downloads they aren't really necessary any more, as you say.