With Millward Brown naming Google as the world's biggest brand for the first time this year, people are once again suggesting that the Internet super brand is becoming too powerful. Back in 2002 many businesses who had enjoyed strong Google rankings simply dropped off the radar and questions were asked about the power of the search engine. When they bought Blogger in 2003, the murmurings began again and Bill Thompson of the BBC wondered whether we should have Ofsearch to regulate the industry. Last year Google bought YouTube and the vocal opposition was back in force. With Google's recent acquisition…