I understand that widgets can use power; especially the ones that update (news, weather, etc.).
What I'm curious about is when you have launchers like Go Launcher and Launcher Pro Plus. If you have them both, what is happening to the widgets that are on the launcher you're not using (including the stock launcher). Are those widgets drawing power to update, even though you aren't seeing them? Should you delete all widgets, except for the launcher you're currently using?