Google just launched a new location based finding service called dodge ball oops i mean latitude. The new application lets you

Share locations
Location sharing starts only when both you and a friend agree. Invite friends via email or easily add them from your Gmail contacts.
Control privacy
You can share, set, or hide your location - or turn off Google Latitude - from the privacy menu. You can also hide your location or share only a city-level location with certain friends. For more information, see the Privacy FAQs.
Share status
Create a status message and upload your photo within Latitude. It also syncs directly with Google Talk. Check your friends' status messages to see what your friends are up to.
Contact your friends
Quickly contact your friends with an SMS, IM, or phone call. You can also get directions to lead you to your friends.

If you have the GPS feature enabled in Google Maps on your mobile phone, you are probably familiar with the reassuring, pulsating blue dot on the map that represents you wherever you go. Google Latttude is now essentially letting you share that blue dot with anyone you like.

All this while still “Maintaining complete control over your privacy”. Don’t feel like being tracked? Just hide yourself from select “friends,” or manually enter a false location as your current one. You can control how much privacy you want on a very granular, contact-by-contact level.

Latitude works out of the gate in 27 countries on Blackberries, Windows Mobile, and Nokia S60s. Android will begin rolling out over the next week, and an iPhone app is coming soon. In the U.S., there is also an iGoogle gadget that shows everyone’s location and messages.

Enjoy Google Latitude on your phone, PC, or both.

From your mobile phone - View your friends' locations and status messages and share yours with them. (Supported phones)

From your computer - View your friends' locations and status messages on a full screen even without a compatible phone or data plan. Click here to see your friends from your PC.