QR Codes... Anyone else confused how to use?

So I have heard about the mysterious QR Codes.. I had wondered how to best use them, and how could I use them to make business easier, or make it easier to do business with me.

I was recently turned on to a free site called kimtag.com. It is site that allows you to set-up a virtual e-card that a client can scan and it pulls all of your info into the mobile device and allows the client to save your info without typing a thing.

This may make things a little bit easier.

Do you use a QR Code? What success do you have?

Here is my code... Scan it with an app on your phone like scan life.

Tell me your thoughts!