Examples of 1% Participation

In my Complexity of Simplicity article, I highlighted a few examples where 1-10% of a Web community’s members are responsible for a huge amount of its value. In particular:

• YouTube counted 100 million downloads and 65,000 uploads per day: a creator to consumer ratio of just 0.5%.
• Just 1.8% of all users write more than 70% of all Wikipedia articles.
• The top 100 of digg’s 20 million users are responsible for 56% of the stories on the site’s home page.
• Some estimates indicate that eBay does not monetize 90% of their users.
• On WalkJogRun.net 30,000 routes were created over the last year by unique 278,000 visitors: that's 10% creators.

To help paint a clearer picture, are there any other sites that further verify this Consumer/Synthesizer/Creator ratio outlined by Yahoo!’s Bradley Horowitz? If you have any examples, send me a note and I'll add it to the list. Thanks!

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