Most authors use business cards. It can be tricky buying top quality cards, and keeping costs down at the same time. I found a new place that offers unlimited Free Business Cards and free shipping. In return, they want to put 3 text ads on the back.

I included pictures. It is much easier to show you than to try and describe it.  Their website says that you can say what types of businesses you will not promote - like a competitor. I think it could be a good thing for some small businesses and authors.  In the beginning, having unlimited business cards could be a definite advantage.  You can have cards for anything now - books, selling something, or just as a notice.

I had a friend once who had cards made to sell a litter of puppies.