I have noticed that many people believe that a number of Wikipedia articles
are very US-centric and I think in some occasions this is true. I would say
that you might need more non-US contributors.
Have you considered using geotargeting advertisement for solving this problem?
For example, you could target ads to places like India, Japan, South Africa,
UK, Brazil or Canada.
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NSK
Admin of
http://portal.wikinerds.org
Project Manager of
http://www.nerdypc.org
Project Manager of
http://www.adapedia.org