The number of people who consume user-generated content exceeds the number of creators. This is true in any content loop?more people are always spectators than active participants.

But because user-generated content is affordable, accessible and amenable to mass participation, the delta between creators and consumers is smaller than in traditional media. Maybe that?s why this type of content continues to grow in usage, though not in revenues.

So which types of user-generated content drew the most fans in 2008?

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