NOTE: Firefox 3 required
Click to Install ODRL Policy Extension
(Version 1.0alpha4, released 16 Sept 2008)

How it works:
1 - You will see the odrl-blank icon on the bottom of the window.
2 - When the plugin detects ODRL microformat code on the page, the icon will change to:odrl-detect
3 - If you click on the new green icon, a window will appear with the details of the ODRL license.

Try it out on using the Examples menu....