I have already posted my suspicisions about real participation in consumer generated media or content sites. The Guardian now has some more numbers in the article about the 1% rule

It’s an emerging rule of thumb that suggests that if you get a group of 100 people online then one will create content, 10 will „interact“ with it (commenting or offering improvements) and the other 89 will just view it.

That sounds like CGM marketing efforts are almost not worth it, but if you think again, the 1% are the „opinion leaders“, that influence 10 heavily and 89% at least partially…