Social media watchers are following Four Square very carefully. It's a new location-based service based on your Twitter network with an added layer of social gameplay.
It's being picked up by followers in San Francisco, New York, Los Angeles, Atlanta, Chicago, San Diego, and more.
While no service is likely to achieve the same success as Twitter in such a short period of time, it's worth following newcomers.
What is LBS (location based service)
It's a location-based social network to help you connect with friends using GPS via your mobile device. It enables you to combine location sharing, friend connections, and Twitter-like streams to create a photo and status update feed for your check-in history, and placestreams for each location. Seems like over kill to many.
The question remains, do we really care where complete strangers are throughout the world, and what they're doing every second of the day?