Google (NASDAQ:GOOG) will argue it's not responsible for ad content as it tries to persuade a...

Google (NASDAQ:GOOG) will argue it's not responsible for ad content as it tries to persuade a judge to dismiss an infringement suit by language software maker Rosetta Stone (NYSE:RST). At the heart of the conflict are keyword sales; paid links using RST trademarks directed Google visitors to competitors or counterfeiters.