With all the talk about the Reds losing ways I thought a distraction might be in order.

In my life I have been to several major and minor league baseball games. In all of those games I have never caught a foul ball. I have watched several foul balls caught in close proximity to where I have been sitting. Some of these balls have been caught in a scrum and others have been caught with little or no problem. So my question is this: Is there any etiquette in catching a foul ball?