36 percent of online American adults consult Wikipedia

From the most recent Pew Report:

Top 20 Educational and Reference Websites
Week Ending March 17, 2007
Share of traffic in the category that week

1. Wikipedia (http://www.wikipedia.org/) 24.33%
2. Yahoo! Answers (http://answers.yahoo.com/) 4.23%
3. Dictionary.com (http://dictionary.reference.com/) 3.79%
4. Answers.com (http://www.answers.com/) 3.53%
5. SparkNotes (http://www.sparknotes.com/) 1.62%
6. Google Scholar (http://scholar.google.com/) 1.31%
7. Google Book Search (http://books.google.com/) 1.09%
8. Find Articles (http://www.findarticles.com/) .99%
9. U.S. National Library of Medicine (http://www.findarticles.com/) .99%
10. Merriam-Webster Online (http://www.m-w.com/) .85%

Source: Hitwise, U.S. Internet Visits (market share) for week ending March 17, 2007


I admit I had never heard of SparkNotes until now. [ttw]