In the span of one up-and-down week, Twitter lost one of their most influential teen Twitterers in Miley Cyrus , and then almost immediately found new life in the tween market with the launch of the Twilight Twitter account . It may sound silly, but these 140 character pop culture dramas do matter to Twitter, because their US traffic is flat , and that’s a problem. At the Web 2.0 Summit earlier …

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Twitter Traffic: 3 Solutions to Twitter’s Growth Problem (Mashable)