QR Codes Come for Free with goo.gl URL Shortener
Via a @timoreilly tweet comes a buzz from Matt Cutts which is shown here for the buzz challenged:
So when you use the goo.gl URL shortener (see my tweet about the Chrome extension) you just add .qr to the URL to see the QR code for that URL. So simple and yet so cool.
This blog is at http://goo.gl/dSHl and the QR code at http://goo.gl/dSHl.qr which should show the QR code for my blog: