These are my thoughts on the subject. They are not correct in all cases, so spare me the "We this guy............." Comments.

Jumping around on stage and posing is used by most to make up for true musicianship. It's a gimmick at best. That said, if this is your cup of tea, then by all means jump, just make sure it doesn't cause your guitar playing to suffer. That is a sin I cannot forgive :rolleyes: