Sure. I would go so far as to say if you consider yourself a professional in your field and don't have a business card, you are probably missing out on networki

Sure. I would go so far as to say if you consider yourself a professional in your field and don't have a business card, you are probably missing out on networking opportunities. (Not because you don't have a business card, but because you aren't exposing yourself to situations where people would ask for one.)