Wikimapia

An interesting website:

http://www.wikimapia.org/

The site is based on google maps, and lets users add places of interest and some explanations.

Zoom into any place you like and you can look at user-tagged places and explanations. You can also add your own places (see top left) and once a few people vote that your place is genuine and useful, it is made permanent.

I spent a good couple of hours exploring areas around my primary and secondary schools, some of the places we used to hang out (Linking road, 4 bunglows, Bhavan's campus). I also found some comments from people I know (Many of my neighbors had marked our society as their territory :) ).

p.s. The site is on the slower side, it takes a few seconds to load all the places, every time you zoom or pan.