Virtual address card (or vCard) files make it very easy to add contacts to your own Address Book or share your contacts with other people. No need to enter contact data (and risk typos), just drag and drop to have street addresses, email addresses, telephone numbers, and more added to your Address Book. Want to learn more about vCards and how you can use them? Then take a look at the latest Mac OS X Pro Tip.
Read the whole story here: Mac OS X Pro Tip: Sharing Contacts with vCards