Sign at each ballfield
 

This sign is hanging on the fence at each ball field behind home plate. I would like to see more signs like this. Each sign is about 2 feet by 3 feet. Does any other ball fields have similar signs?

PLEASE REMEMBER
1) These are kids!
2) This is a game!
3) Coaches are volunteers!
4) Umpires are human!

And those signs are like speed limit signs. Most people ignore them.

I doubt they are effective, but this is my favorite of such signs, posted at a Chicago-area youth hockey rink:

http://24.media.tumblr.com/a24b800f5...m7ho1_1280.jpg