The European Commission has walloped Google unit with a record $2.7 billion for giving its own shopping comparison site preference above smaller competitors, and thus abusing its dominant position as a search engine. Google must end the conduct within 90 days or face penalties of 5 percent of its average daily global revenue, the EC said. Commissioner Margrethe Vestager, who is in charge of regulating competition, said that Google's actions were not limited to reasonable efforts to put out a better comparison shopping product than its rivals.