Greenhaus Education and Other "Effects"

Read an interesting quote yesterday in my research book, which comes from Jakob Nielsen about the 90-9-1 Rule for online community participation, or open-source.  Basically it says that even though open-source and free online communities are open for anyone to contribute, so in theory provide a wider audience to contribute the content, making it a diverse resource, in fact this is NOT the case.  90% of the users are passive consumers, with only 9% willing to comment or contribute content periodically, and most of the content and commentary being contributed by 1% of the users. Who is that 1%?  To me, a scary question. This finding is not surprising but is a little disturbing in the educational arena, where free and open-source are becoming more prevalent options due to the tight economy.  It begs the question, who is this 1% of the population that is contributing to the content being used by educators/education sites, and is it really reliable, res...