Pew Report on Wikipedia and Reference Sites
http://www.pewinternet.org/PPF/r/212/source/rss/report_display.asp
Pew reports that 36% of online American adults consult Wikipedia. A table included in the report details to top sites used for reference and education. Wikipedia has 24% use in a table provided by Hitwise of those types of sites.
The National Library of Medicine is featured, but all of the others are not library sites. That's a given if you add in OCLC's finding that 1% of folks start with the library Web site when they need information.
Implications:
Librarians should be answering questions through sites noted in the table, such as Yahoo! Answers, etc.
Librarians might was to be working in wikipedia as well, crafting articles and building in library presence.
What else?