Houston-based Signet Interactive LLC recently announced it acquired Austin-based Think Uptown, a digital marketing agency with five employees. This is Signet's second acquisition this year, as it acquired The Woodlands-based Newton Design and Marketing in July. Terms were not disclosed for either deal. The acquisitions bring Signet's headcount to 30 employees, said Chris Mulgrew, president and chief strategy officer. The company first expanded to Austin in 2013. In addition, Signet plans to make...