Google has reported its highest quarterly profit, suggesting that the internet advertising market is bouncing back from the recession. Google reported net profit of 1.64 billion dollars between July and September, up 27 per cent on the same period a year ago. Google chief executive Eric Schmidt said the worst of the recession is over. US computer giant IBM also reported strong profits of 3.2 billion dollars for the period, up 14 per cent on a year earlier. The company also delivered a more optimistic forecast for full year earnings.