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<style face="normal" font="default" size="100%">Rating Friends Without Making Enemies</style>

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<style face="normal" font="default" size="100%">Supporting Collaborative Help for Individualized Use</style>

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<style face="normal" font="default" size="100%">Activity lifespan: An analysis of user survival patterns in online knowledge sharing communities</style>

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<style face="normal" font="default" size="100%">Competing to Share Expertise: The Taskcn Knowledge Sharing Community.</style>

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<style face="normal" font="default" size="100%">Social regulation of online multiplayer games</style>

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<style face="normal" font="default" size="100%">The Zephyr Help Instance: Promoting Ongoing Activity in a CSCW System</style>