Google may be skewing how the public views nanotechnology(arstechnica.com)
arstechnica.com
Google may be skewing how the public views nanotechnology
http://arstechnica.com/science/news/2010/05/is-google-skewing-how-the-public-views-nanotechnology.ars
It is also likely that google's ranking algorithms reflect the fact that sensational articles about health concerns get more links than serious scientific articles.
Edit: At one point the author does say "Google may not be driving the trend here so much as reflecting it."