The 15 Most Popular Reference sites

Here is the 15 most popular reference sites based on the average of each website’s Alexa, Compete & Quantcast ranking.

  1. Wikipedia
  2. Yahoo! Anwers
  3. About
  4. Answers
  5. eHow
  6. Reference
  7. HubPages
  8. Squidoo
  9. Google books
  10. wikia
  11. wikihow
  12. Internet Archive
  13. howstuffworks
  14. Mahalo
  15. AllExperts