Twitter CEO: We have 100M active users

Twitter CEO Dick Costolo lifted the veil on Twitter user statistics Thursday morning. Besides revealing the company's active users, he talked about features it's working on, the expansion of promoted tweets, and why he's "excited" that 4 out of 10 active users don't tweet.…

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Project Runway brings fan voting to Twitter

Project Runway viewers are already big social media users, sharing thoughts about the show while watching it live. So why not use Twitter as a way for fans to vote for their favorite contestant. That was the thinking behind Project Runway's Fan Favorite contest.…

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Twitter to Ad Competitors: Go Pound Sand

Twitter today announced it would no longer allow third-party ads to be injected into users' Twitter timelines. The ban is particularly interesting given it's almost exactly what the company's own recently announced advertising platform, Promoted Tweets, does -- insert paid and relevant tweets into timelines.…

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