So I removed a widget and then went back to put it back on and got the msg there wasn't room. I played around a bit moving and removing items to make room. I learned that while there doesn't seem to be room for the widget, there is room for the "program" for the same app/function. So now I'm wondering, what is the difference between these three? Will one result in more or less battery drain? Is the widget quicker to launch it's program equivalent? Should I avoid placing one type on the home page?