Go to this site:
http://qrcode.kaywa.com/ this site allows you to create your own Quick Response icon. On the right side click the "test' button and below type in something like your name or a short phrase and click the "generate" button and a QR icon will appear. Very clever. You can actually then add it to your emails or web site or blog. Example, in your emails under your signature you could have one of these QR icons with your blog address.