Geolocation is a rather secret feature of some browsers and toolbars. It allows the creator of that program to get a fix on the location of your computer to within a few meters of where you actually live. For the potential dangers read the article from BBC News entitled ‘Web attack knows where you live’ here.
The question is therefore how to effectively disable this feature. At this moment this site offers solutions for Apple Safari, Firefox, Flock, Google Chrome, Google Toolbar, Opera and Twitter.
 Mozilla Firefox:
• Type ‘about:config’ in the address bar (without the ‘’)
• Discard the warning by hitting ‘yes’
•  Scroll down until you reach ‘geo.enabled’ or you can simply search for ‘geo.enabled’
• Doubleclick the item and it will change from its default value ‘True’ to ‘False’
•  Scroll down until you reach ‘geo.wifi.uri’or you can simply search for ‘geo.wifi.uri’
• Rightclick the Value of ‘geo.wifi.uri’ and click ‘Modify’
• Type in ‘localhost’ and hit ‘OK’
[more at no-geolocation.blogspot.com...]