twesterm on 24 November 2008
Congrats!
I have terrible luck with downloading things on my PS3 so take what I say with a grain of salt, but I believe you tell something to download, then tell it to download in the background, and then continue looking for more demos. When you're done, turn off your PS3 and it will ask you if you want to keep the PS3 on while your downloads finish and then select yes.
As far as I know there's no way to automatically download new demos but I haven't done a lot of fiddling around on PSN.
