"These results surprised one of the study's authors, Jacques Bughin, who's a director in McKinsey's Brussels office. Following the study, he interviewed a number of the respondents. "The reason why blogs and wikis, in particular, aren't well used is that companies are still afraid," he posits. "How do you basically regulate how to contribute?" He also thinks the wisdom of crowds isn't always sharp and that companies are worried about getting bad information on a collaborative document, such as a wiki."

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