Wikipedia requires sources for its information, especially anything contentious. If Twitter somehow obtained the manpower and speed to do that, then it might be

Wikipedia requires sources for its information, especially anything contentious. If Twitter somehow obtained the manpower and speed to do that, then it might be OK but there's no hope of that ever being possible. The rate of content generation is too high, the demand for immediate publication is too high, and the effect of removing something a few days after it's posted is too little too late because it will have already had its effect. Nobody would use such a slow and boring service where almost every post gets automatically put on hold until someone can find a source. Users obviously won't do their own research - that's like schoolwork! Wish somebody a happy birthday. Wait till tomorrow for Twitter's employees or crowdsourcing to verify it. And it only gets verified if that information is actually available to them.