It’s just good business to hand out your business card to prospective clients, and it has been for a very long time. As far back as the Renaissance, special guests were announced with name cards that displayed who the guest was and what types of greetings were due. It wasn’t until the Industrial Revolution that business cards became primarily a means of displaying trades or professional skills. Business cards are mostly used for marketing and networking in the modern age, and your organization should be using them.