This link tells you what information your pc gives to the website. It shows the ip address which is quite normal, but it also gives an area map of where you are located within Mumbai using google maps.

My query is that how do they find out the area _within_ the city of your ip address? What does the number value immediately after Bombay indicate? Triband users try it out.

"You are from Bombay, XX, in the IN, with an ip of XXX.XXX.XXX.XXX

Your IP Address is XXX.XXX.XXX.XXX "

It got me in Bombay,but in Grant Road,Bombay Central Area,quite far away from Mulund......... ;)

Regards, Easwar