<img alt="" height="1" width="1" />http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNHzCRMdUl4qQEi916NvgjMuQ5OqoA&url=http://www.theatlantic.com/technology/archive/2012/04/wikipedia-and-the-shifting-definition-of-expert/256418/
The Atlantic
By Rebecca J. Rosen How do we judge whether a person knows what he or she is talking about? How do we gauge someone's credibility? At least in part, we rely on a set of cues -- titles, university degrees, papers published, lectures given -- that have ...
http://news.google.com/news/more?pz=1&ned=us&ncl=dK2KPhxsxIYue3M
A prerequisite for being considered an expert should be recognition of having expert knowledge by an institution outside the internet.
Otherwise... not much.