This is one good approach (but definitely not the only road) to being a successful entertainer/musician, as there is really no 'one' RIGHT performance style to success. Whether you're cool & reserved, or actively gregarious & in your face, it's most IMPORTANT to 'be yourself'. When you do this, you'll quickly garner your own loyal following (audience) who will appreciate your brand of music, and love you for who YOU are. I've attend many a concert where the performer seemed reserved & introspective, but the minute they began playing & singing, they light up the room. Schmoozing with the audience is just one style/brand of entertaining. I've believe the most important thing for all of us to do, both on/off stage is to be ourself, as audiences can spot a phoney a mile away. As far as business cards go, I myself don't actively hand them out, but they are available if/when they ask me for one, of which routinely occurs on nearly every gig. - Scott