I made a new site to share geographical information http://www.wikimap.biz
It is built over GoogleMap, but has some additional feature.

Right now You can point a location and the site will give you an URL,
which you can send to your friends by E-Mail. Which will show the exact
location you pointed to your friend.

Say for instance, you want to guide a visitor to your shop. All you
need to do is to open WikiMap site; select the share option from tool-box, pan and zoom to
locate your shop on the map; this will give you an URL code. Select
copy-paste it to a mail. When your visitor will click on the link he
will see your shop clearly marked. And he can take a few printouts to
guide him to your shop. Like say, I am right now at
http://www.wikimap.biz/index.php?x=88.43239903450012&y=22.571100220730894
click on the link, you will see a red marker on the map and can zoom
to any level to find your way. Initially you may be interested in a
map that shows whole of locality and then may be a closer view that
shows each building in the block.

In most of the places GoogleMap shows details upto building level.
Apart from the existing features, you can also add your location
information in the site (requires registration - and approval)

I need your feedback on the site :-), you can invite your other friends to
use the site.