Nice! Also: "simpleqrcode" app on android market allows you to encode your contact info into a QR code directly.
Hey, I would like to see your app, but it is not found when I use "Android market" on my Nexus One. Perhaps your app is on another market place?
Install "Barcode Scanner" (available in the default android market). Open a contact (I am listed in my own contacts list), hit menu, select share, select Barcode Scanner, see a QR code on your screen that someone else can scan.