From the WSJ an article on whether Google is a monopoly and is that necessarily a bad thing; coupled with the nature of the views taken by those responsible for enforcing anti-trust laws.
Could in seeking to address one issue regulators cause economic harm? Is legislation framed prior to the internet the right legislation? How wide or narrow should a market be defined? In what might be a very diffuse market what constitutes dominance? How is dominance to be defined? Is a monopoly as defined in such instance of itself a bad thing?