A business card with URL or other information coded to NFC tag is a good idea, but what to do with those smart phones that do not have NFC capabilities.
One older alternative to get information read by smart phone is to use QR code or similar two dimensional bar code that can be read with smart phone camera. So an ideal business card could have both QR code and NFC tag in it.
The first questions are how to make such codes and how to read them. The answer is that there are software and on-line services that allows you to generate QR codes. Reading is done in smart phone using suitable application. Free QR Code Reader for is a well working software for reading those QR codes with Android smart phone.
Now to the generation. After some searching I found that http://goqr.me/ has a free QR code generator that seems to work well. QR Codes created on goQR.me are completely free of charge (commercial and print usage allowed, including advertising).
Here is QR code with http://www.epanorama.net/ URL: