vCards are common enough, and many times you encounter them on websites. And what happens when you tap on one in your Mobile Safari? You get an error message...
Just install vCard reader, and instead of error messages youll get option to import the vCard. Its that simple!
Want to try it? Heres a link to w3.org vCard example. http://www.w3.org/2002/12/cal/vcard-examples/john-doe.vcf