Lufthansa recently launched a new app called Blue Legend which allows passengers to virtually "check in" into airports using foursquare. Customers may also share their expereinces through other social networks. 

The check in feature, does not take the place of actually checking in for a Lufthansa flight. Passengers are rewarded with ranks and badges for regularly checking in virtually to Lufthansa sites by Blue Legend. 

Users can become "Expert Pilots" on the routes they fly most frequently. Early risers who check in before 6 a.m. are awarded the "Early Bird" badge. Passengers who travel more than 388,000 kilometers with Lufthansa will receive the "To the Moon" badge. Badge by badge, regular travelers who check in most frequently to Lufthansa sites can become true "legends of the skies" with Blue Legends, says the press release. 

Blue Legends is one of the first 10 so-called foursquare Connected Apps on mobile devices which passengers can broadcast their current location via social networks by "checking in."

Foursquare is available now in a beta version in the foursquare gallery or through the company's Facebook page. Users who check in frequently with foursquare becomes a "Mayor" instead of an "Expert Pilot."

Lufthansa developed the MySkyStatus application in 2009 which allows users to send automatic status updates about their flights to their friends on social networks.