How to deactivate geolocation tracking in Firefox and Opera browsers:
"To disable location aware in Firefox, type about:config in the toolbar and change the geo.enabled value to false by double-clicking on the key.
To disable geolocation tracking in Opera go to Settings > Preferences > Advanced > Network, and uncheck Enable geolocation."
Test your geolocation browser awareness at: http://3liz.org/geolocation/
