Knowing which applications to stop
I just got a used Nexus One and I see a lot of running services and applications. I'm wondering what negative impact there would be if I just started switching them off?
For example, obviously, I don't want to mess with "Calendar," but what about "Calendar Storage?" If I install Handcent SMS, do I still need the Messaging-related services/applications? Same for Media: if I install Winamp, do I still need those?