Smile, You're on LinkedIn

Adding photos may be just the first in a string of moves aimed at staying relevant and protecting its turf from social networking sites

Business networking Web site LinkedIn is loosening its tie. Caught between a polished image as a nexus for professional contacts and the encroachment of Facebook and other networks, LinkedIn is taking a step toward informality. Starting Sept. 26, the site's 14 million users will be able to post photos of themselves.

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