"The supplemental index has been on the upswing for quite a while, " says Aaron Wall, a search engine consultant and Google-watcher.

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The former management consultant and Google product manager, who has won over many Twitter employees with his self-deprecating humor, has also been busy building out the company's executive bench.

WSJ: New Financing Values Twitter As High As $7 Billion

She is a strategy consultant who has worked with clients including Google, the National Park Service, and Yale University.

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