Top 20 sites by Alexa Ranking

1. Google
google.com
Enables users to search the Web, Usenet, and images. Features include PageRank, caching and translation of results, and an option to find similar pages. The company's focus is developing search technology.

2. Facebook
facebook.com
A social utility that connects people, to keep up with friends, upload photos, share links and videos.

3. Yahoo!
yahoo.com
Personalized content and search options. Chatrooms, free e-mail, clubs, and pager.

4. YouTube
youtube.com
YouTube is a way to get your videos to the people who matter to you. Upload, tag and share your videos worldwide!


5. Twitter
twitter.com
Social networking and microblogging service utilising instant messaging, SMS or a web interface.



6. Wikipedia
wikipedia.org
An online collaborative encyclopedia.

7. Blogger.com
blogger.com
Free, automated weblog publishing tool that sends updates to a site via FTP.

8. Microsoft Network (MSN)
msn.com
Dialup access and content provider.

9. Baidu.com
baidu.com
The leading Chinese language search engine, provides "simple and reliable" search experience, strong in Chinese language and multi-media content including MP3 music and movies, the first to offer WAP and PDA-based mobile search in China.

10. Yahoo!カテゴリ
yahoo.co.jp
有料審査制のディレクトリ。ウェブサービスの形でAPIを公開。

11. Myspace
myspace.com
Social Networking Site.

12. Google India
google.co.in
Indian version of this popular search engine. Search the whole web or only webpages from India. Interfaces offered in English, Hindi, Bengali, Telugu, Marathi and Tamil.

13. Windows Live
live.com
Search engine from Microsoft.

14. Google
google.de
Suche im gesamten Web, in deutschsprachigen sowie in deutschen Seiten. Zusätzlich ist eine Bildersuche, eine Newsarchiv-Suche (ehemals dejanews) sowie ein Katalog vorhanden.

15. QQ.COM
qq.com
中国最大的门户网站，提供即时通讯、新闻资讯、网络游戏以及在线拍卖业务，

16. RapidShare
rapidshare.com
Users can upload up to 100 meg files for sharing. Provides downloads of 100 megs per hour on the free service. Premium service also available.

17. Microsoft Corporation
microsoft.com
Main site for product information, support, and news.

18. WordPress.com
wordpress.com
Free blogs managed by the developers of the WordPress software. Includes custom design templates, integrated statistics, automatic spam protection and other features.

19. Google.fr
google.fr

20. Google UK
google.co.uk
The local version of this pre-eminent search engine, offering UK-specific pages as well as world results.