[Andy]

I, too, have heard the things mentioned in David's and Steve's posts. I try to primarily focus on the ball as it comes through the zone, but on a borderline pitch, I may use the location and actions of the catcher's mitt to help decide.

Back to the original question regarding friendly banter - the mantra I was taught is "polite - but professional". I will respond to a greeting or question, I will not accept water from either team (I bring my own), and I will not attempt to coach players. If a player makes a good play and I have the opportunity, I will tell them - hey, nice play.

To add a further element to the question - do you follow the same guidelines off the field? The situation I am thinking about is at tournaments with coaches and players milling around and you may have a game off.