Twitter CEO wins breathing room from Wall Street critics

By Alexei Oreskovic SAN FRANCISCO (Reuters) - Twitter Inc's forecast of re-accelerating user growth helped lift its stock on Thursday, but the goodwill will only temporarily take the heat off embattled Chief Executive Dick Costolo, analysts said. Twitter's stock jumped 9 percent to $45 in after hours trading. Twitter has struggled to grow the number of users on its service, raising questions about whether it can achieve the scale of social network Facebook Inc , which has 1.39 billion