Google has knocked Microsoft off the top spot and been named the most powerful global brand of 2007 in a recently published ranking In the ranking, which factored in financial performance and consumer sentiment, Google ranked first with a brand value of more than $66 billion, nearly double its value in the 2006 ranking, according to market researcher Millward Brown Optimor Microsoft came in third this year with a brand value of $55 billion. Fellow tech companies in the top 10 are China Mobile, in...