Did your teenagers suddenly stop using their Facebook accounts? They may not be the only young adults who’ve lost interest in the largest social network on Earth, according to a recent report by The Los Angeles Times.

There are many reasons why teens could start visiting Facebook less, including the fact that parents keep tabs on their kids on the social network. On sites like Twitter and Tumblr, they can use any pseudonym, and they don’t have to feel pressured to add people they don’t want to add, even if they know them in real life.

Groups of friends also find themselves having fun on Twitter trying to make hashtags trend. In fact, according to a recent Pew Internet survey, 31% of all internet users 18 to 24 years of age use Twitter, though we imagine some of them have inactive accounts.

With 900 million users, it’s unlikely that Facebook will be dethroned as the king of all social networks in the near future. But if teens truly are beginning to lose interest in it, the company has to find ways to keep things fresh in order to avoid becoming MySpace Wasteland 2.0. –Mashable