1- google.com
2- yahoo.com
3- facebook.com
4- youtube.com
5- live.com
6- wikipedia.org
7- blogger.com
8- msn.com
9 - baidu.com
10 - yahoo.co.jp
11- myspace.com
12- google.co.in
13- google.de
14- twitter.com
15- qq.com
16- rapidshare.com
17- microsoft.com
18- google.fr
19- wordpress.com
20- google.co.uk
21- bing.com
22- ebay.com
23- sina.com.cn
24- fc2.com
25- craigslist.org
26- google.cn
27- amazon.com
28- yandex.ru
29- google.com.br
30- google.co.jp
31- mail.ru
32- vkontakte.ru
33- flickr.com
34- google.it
35- aol.com
36- google.es
37- hi5.com
38- taobao.com
39- imdb.com
40- 163.com
41- photobucket.com
42- orkut.com.br
43- google.com.mx
44- go.com
45- doubleclick.com
46- bbc.co.uk
47- ask.com
48- youporn.com
49- pornhub.com
50- bp.blogspot.com
esses são apenas os 50 sites mais requisitados na internet mundial no site www.alexa.com você terá os 500 melhores colocados.