A Google logo is seen at the entrance to the company's offices in TorontoBy means of Alexei Oreskovic SAN FRANCISCO (Reuters) – Google Inc plans to launch new product-endorsement advertisements incorporating pictures, comments and names of its users, in a transfer to check the “social” advertisements pioneered with the aid of rival Facebook Inc that is elevating some privacy concerns. The changes, which Google announced in a revised terms of service coverage on Friday, set the stage for Google to introduce “shared endorsements” ads on its web sites in addition to tens of millions of different internet sites which can be part of Google’s display promoting community. …