Change Geolocation (Location Guard) is a browser addon that let you easily change your geographic location to a desired value and protect your privacy.
Simply open addon's option page and set latitude and longitude for where you want the geolocation to be (default location is Greenwich, UK). Next, reload a page and check your location (i.e. webbrowsertools.com/geolocation/). Please note that, beside latitude and longitude you can set other variables in geolocation API (see options page). Moreover, pressing on the toolbar icon will activate or deactivate the addon.
Note 1: toolbar button serves as ON|OFF switch to activate and deactivate the addon. Green color is for ON and grey color is for OFF state.
Note 2: In order to report bugs, please fill the bug report form in the addon's homepage (http://mybrowseraddon.com/change-geolocation.html).