I continue to use Backgrounder on my iPhone 3GS on 4.0, though I do not use it actually to background applications. I use it merely to control which apps are natively backgrounded.
I'm using it for things like netflix that don't have native support.
i use backgrounder so i can keep navigon running in the background for longer than 10 minutes, e.g. on a road trip.
dont ur iphone get hot when using gps?
I don't have a reason to use it, since Pandora and iHeart Radio are natively backgrounded now.
Backgrounder for me is overkill, if I want true multitasking, then I should probably find a computer nearby and finish whatever is taking that much true multitasking in half of the time it would take to do on a 2 inch keyboard/touchscreen. Apple implemented this in a great way for battery life and simplicity.
I use backgrounder to force multitasking on games that have not been updated for it yet.
Also, for Safari and other file downloading apps, so I can download longer than 10 minutes without having to reopen the app.
It's nice to have for games with load times, I can switch over for a minute and not get bored staring the loading screen.
Am I really the only who thinks Apple did a piss poor job of implementing multitasking in iOS4?