I have done alot of informal teaching and it is hard to keep people to the topic at times, we all stray every once in a while..............It's up to you to keep on topic, but since freedom of speech still applys, maybe we can learn from straying some.............it can be upsetting to those that want to get remarks on a certain topic, often better to listen.......this is a great site, with good remarks, and good members......