这一社会图或社会地图一旦投入使用，它就能成为传播信息的有力途径。
Once this social graph, or map, is in place, it becomes a potent mechanism for spreading information.
Facebook正努力尝试一些新模式使得社会图(social graph)盈利。
Facebook is trying hard with some new models to monetize the social graph.
而其他的生财之道却可能有很大的风险，它可能会降低用户的积极性并进而危及到整个社会图。
Trying to make money in other ways could be risky, since it might alienate users and damage the social graph.
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