Top 20 Web 2.0 Services

Ever wonder who’s on top when it comes to Web 2.0 services? Hitwise Intelligence has some answers.

The research company has released a list of the top 20 Web 2.0 sites based on U.S. visits in July. It used Wikipedia’s definition of a service designed “to enhance creativity, information sharing, and, most notably, collaboration among users.”

Drumroll, please…

1. MySpace — 44.14% market share
2. eBay — 16.22% market share
3. Facebook — 13.03% market share
4. YouTube — 9.88% market share
5. Wikipedia — 4.76% market share
6. Craigslist — 3.14% market share
7. Yahoo Answers — 1.41% market share
8. myYearbook — 1.05% market share
9. Tagged — .95% market share
10. Flickr — .86% market share
11. Bebo — .71% market share
12. Meebo — .59% market share
13. BlackPlanet.com — .52% market share
14. GaiaOnline.com — .45% market share
15. Blogger — .40% market share
16. Adam4Adam — .35% market share
17. hi5 — .35% market share
18. WikiAnswers — .33% market share
19. IMEEM — .31% market share
20. LiveJournal — .30% market share

Hitwise points out that many of these are still independent and non-acquired. Also of note: Digg did not receive enough traffic to crack the top 20, according to the analysts.

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