LG, the South Korean electronics manufacturer, is making use of Twitter functionality for in-house communication on a new company mobile application called BizTweet that has proved so popular it just start pitching the service to others. It’s a fantastic idea for improving informal communication and creative idea-sharing between employees. There’s just one problem. The idea isn’t exactly new, and there is already a Twitter plug-in called BizTweet.

LG has to get some credit, though. It’s a fairly novel use of free Twitter APIs to deliver internal communications on the enterprise level. The company has also determined that this isn’t as “time wasting” as the regular Twitter can be. This is because, the Wall Street Journal notes, ”BizTweet uses an employee’s real name and photograph, unlike the pseudonyms on the public Twitter,” and an LG employee mentioned that “it’s fun but less fun than the public Twitter.” LG is so happy with the result of the application, says WSJ, that it is considering making it a public application.

This is where it might just run into trouble, if not competition. The idea of utilizing Twitter for internal company communications is already out there. CatsWhoCode.com, for example, published instructions for creating private Twitter conversations on WordPress in July 2009. Fortunately for LG, there doesn’t seem to be any specific Twitter app that has the exact same functionality as its BizTweet. But there is a Twitter plugin called -you guessed it – BizTweet, which was released in August 2009.

Good idea LG, but you may need to rebrand it, and run it past legal first.