Facebook是最大的由用户产生内容的网站，内容包括图片，视频，链接，评论。

Facebook is the single largest repository for user-generated content such as pics, videos, links and comments.

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我们想知道，还有多少其他的像这样的真正的商业想法会在这个混沌的免费用户产生内容的世界中出现。

We wonder how many other real business ideas like this will spring from the chaotic world of free user generated content.

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作为依靠用户产生内容的媒介形式其信息的传播影响力主要体现在用户扩散模式和信息传播模式上。

As a sort of medium relying on the content produced by the user, its dissemination of information is mainly reflected in the mode of user diffusion and information dissemination model.

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