Here is the QR code for http://screaminghawk.blogspot.com/. Android has an app that reads these barcodes and then takes you to the sites are adds the contact or whatever the information. Handly dandy ay.
http://goo.gl/. Because this site is new the URL wills be even shorter. It also tracks page views etc. http://goo.gl/ZafRK = My blog. And then the QR code for that URL is even smaller.
http://zxing.appspot.com/generator/. It's fantastico!