Brand and advertising representatives debated the best way to combat online ad fraud at the I-COM Global Summit in Spain this week. The Wall Street Journal recently estimated that fraud affects 33% of online ad placements. Amaya Garbayo of Kellogg said advertisers should get what they are paying for, while Dean McRobie of Omnicom said ad fraud will exist "no matter what." "We have a problem. We need to get it fixed. We need to get it fixed now," said Andy Fisher of Merkle.