Yes, Yahoo! has made their first acquisition under Marissa Mayer’s watch. Stamped is a one-year old, New York based startup that allows users to keep track of and share the things they like with their friends as well as tap into their friends’ recommendations and those of well-known tastemakers. It seems though that the main motivation behind the purchase was the talent behind the company, which consists of five ex-Google employees. In their Q3 earnings call Mayer said that Yahoo! very much needed more mobile engineers as it transitioned to a “mobile-first” company.