it really depends what you do. I need to be in touch and available to a lot of people - I have several telephone numbers, my address, my email, my webpage on the card, along with my tittle. the less info on the card, the more you are "assuming" that the person should know about you, and the less "available" you are to them. if you are going to have 3 clients, and they all know you, don't put anything on your card. if you need alot of people to be able to find you, put more info on your card. for an average card, I suggest at least one phone number (land or cell), probrably both, email, name tittle. address is good if you will expect packages and snail mail. while it may be cool not to have a tittle, if you are new in your job, or young, you want people to know what you do.