Google is by far the most popular search engine in the world, and its recent changes to push its social network, Google Plus, front-and-center in its search results have been met with some derision from users, but is it anti-competitive?

That’s the assertion made by Jeffrey Katz, the CEO of online shopping website Nextag and former CEO of travel website Orbitz, in a Wall Street Journal editorial that ran in print and online on Friday.

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