it is a matter of learning your trade. We've all made mistakes at sometime or other. Some of us learn from them.

An intro should be relevant. And understood. Otherwise it is less than pointless.

I like to give a refference of some kind. At least to mention the writer's name. Some little humourous story goes down well.

I have noticed however that it is the youngsters refferences that have no meaning for me. Perhaps they are in a parallel world to mine.

Also some egoist performers seem to think that the audience know who they are. This is not always the case. We don't all know who you are. So references to you and your friends go right over our heads.

Chas