How many of you, or your parents, have access to a mobile device that will scan QR codes I wonder? If you have an ipod touch or a smartphone then you can get several free apps that will read QR codes. So, what are they? Here is a good explanation of what they are and how they could be used.

Image from: http://www.flickr.com/photos/info_grrl/5281436894/sizes/m/

Here is a QR code for our diigo site. Does it work for you?