The BTPW icon will appear on the toolbar greyed out. To use the addon simply click the BTPW icon which will light up in blue. You can then click on web links as normal and you will appear to websites as if you are using the addons referrer and user agent settings. To turn off simply click the BTPW icon again to grey it out. When turned on, the addon will intercept all clicked links and substitute the referer and user agent. When off the addon does nothing. No information is stored, tracked or sent anywhere by the addon when it is installed, is on (blue icon) or off (grey icon).