Clutter is an ugly word. Keep your card simple and make sure you design it to do what you want it to do.
Some people think a business card should be crammed with information. People like simple, easy to read business cards. If you want to impart more information, the card should simply provide them with information on how to find you, call you or view you on line.
You can add a couple of simple items along with the contact information. A tag line might work to engage them, especially if it is featured in other media and triggers brand or name recognition. Pictures of you or products might engage them too. Don’t add much more if anything else to your contact information.
And, you may get better results with just a phone number, email address or web site URL. Fax and address may not be all that beneficial unless you are a retail location.
Keep it simple or you will drive them away! Remember, a business card’s primary purpose is to provide contact information that allows them to contact you and learn more about you.