Economy of New York City feet (37.2 million m) that same year, is the largest central business district in the world. New York City is distinctive for its high concentrations of advanced service sector firms in the law, accountancy, banking and management consultancy fields. It is the top global center for the advertising industry, which is metonymously called "Madison Avenue". Silicon Alley, metonymous for New York's broad-spectrum high technology sphere, continues to expand. Finance, high technology, real estate, insurance, and health care all form the basis of New York's economy. The city is also the nation's most important center for mass media, journalism, and publishing.
Concentration of media ownership continue to reduce the diversity of information provided, as well as to reduce the accountability of information providers to the public. The ultimate consequence of consolidation, critics argue, is a poorly informed public, restricted to a reduced array of media options that offer only information that does not harm the media oligopoly's growing range of interests. For those critics, media deregulation is a dangerous trend, facilitating an increase in concentration of media ownership, and subsequently reducing the overall quality and diversity of information communicated through major media channels. Increased concentration of media ownership can lead to corporate censorship affecting a