Internetometers are sig buttons that count the amount of internets you have been given. A sig button is a bit of HTML or BB code to put in your sig, usually indicating you like something or made something, such as the "Powered by Purple" button in my sig. They also often lead to a site where you can get one of your own, or a site for the thing advertised in the sig button.
On my profile there's
Mixer8421
Member Since 17 Oct 2011
and on your I see
Dunc2403
Member Since 18 Oct 2011
maybe because I'm in other time zone?