I use it extensively, and I would be frustrated without it. I currently have nine apps running: the clock/alarm app, an X terminal (running an ssh session) the phone contacts the file manager a web browser window Conboy an IM window an app which helps me catalogue my book collection (I wrote this myself and it doesn't have a good name) I do usually close apps when I'm done with them, but these have all been recently used. You could probably get an interesting response by asking this on /r/n900/ as well.