New location app a boon for Charlotte business? Check in, even become mayor with FourSquare 

By Austin Light CHARLOTTE — FourSquare, a location-based game/application on the Internet, came to Charlotte in late November as part of a 21-city expansion. The application is being billed by some, including CLT.blog and local social media strategist Jason Keath, as the next Twitter, or at least the next application to see Twitter-like success. The difference? [...]