Carr wrote the 2004 book Does IT Matter? Information Technology and the Corrosion of Competitive Advantage (Harvard Business School Press) and the 2003 Harvard Business Review article "IT Doesn't Matter". In these widely discussed works, he argued that the strategic importance of information technology in business has diminished as IT has become more commonplace, standardized and cheaper. His ideas roiled the information technology industry, spurring heated outcries from executives of Microsoft, Intel, Hewlett-Packard and other leading technology companies, although other commentators defended his position. In 2004, Carr published the controversial article "The End of Corporate Computing" in the MIT Sloan Management Review, in which he argued that in the future companies will purchase information technology as a utility service from outside suppliers. Earlier in his career, Carr served as executive editor and acting editor of the Harvard Business Review.

Carr's second book, The Big Switch: Rewiring the World, From Edison to Google, was published in January 2008 by W. W. Norton. It examines the economic and social consequences of the rise of Internet-based, or "cloud," computing, comparing the consequences to those that occurred with the rise of electric utilities in the early 20th century.

Through his blog "Rough Type," Carr has been a critic of technological utopianism and in particular the populist claims made for online social production. In his 2005 blog essay titled "The Amorality of Web 2.0," he criticized the quality of volunteer Web 2.0 information projects such as Wikipedia and the blogosphere and argued that they may have a net negative effect on society by displacing more expensive professional alternatives. In a response to Carr's criticism, Wikipedia co-founder Jimmy Wales admitted that the Wikipedia articles quoted by Carr "are, quite frankly, a horrificembarrassment" and solicited recommendations for improving Wikipedia's quality. In May 2007, Carr argued that the dominance of Wikipedia pages in many search results represents a dangerous consolidation of Internet traffic and authority, which may be leading to the creation of what he called "information plantations". Carr coined the term "wikicrats" (a pejorative description of Wikipedia administrators) in August 2007, as part of a more general critique of what he sees as Wikipedia's tendency to develop ever more elaborate and complex systems of rules and bureaucratic rank or caste over time.

In January 2008 Carr became a member of the Editorial Board of Advisors of Encyclopædia Britannica.

Is Google Making Us Stupid?

"Is Google Making Us Stupid?: What the Internet is doing to our brains" is a magazine article by Carr which is highly critical of the Internet's effect on cognition. Initially published in the July/August 2008 edition of The Atlantic, the article has been read and discussed widely in both the media and the blogosphere. Carr's main argument is that the Internet might have detrimental effects on cognition that diminish the capacity for concentration and contemplation.His book The Shallows: What the Internet is Doing to Our Brains, released in June of 2010, develops this argument further.

Opinions and reactions

• How Long Does IT Matter?
• The Argument Over IT May 1, 2004
• Does Nick Carr matter? August 21, 2004
• Nicholas Carr Strikes Again January 23, 2008 ITworld
• Nicholas Carr's "IT Does not Matter" Fallacy and "Everything in the Cloud" Utopia Highly critical view on Carr's writings from Softpanorama

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