List of the 128 Top Web 2.0’s Websites 

1. 500px.com
2. about.me
3. academia.edu
4. artblog.fr
5. arteblog.com.br
6. authorstream.com
7. bcz.com
8. bigsight.org
9. bloa.pl
10. blog.com.es
11. blog.student.pl
12. blog4u.pl
13. blogbaker.com
14. blogcindario.com
15. bloggproffs.se
16. blogigo.de
17. blogmonster.de
18. blogspot.com
19. bloguedoido.com
20. blogvie.com
21. blogymate.com
22. bungie.net
23. buzznet.com
24. canalblog.com
25. ccmixter.org
26. cdesite.com
27. centerblog.com
28. clipmoon.com
29. cookeatshare.com
30. docstoc.com
31. doomby.com
32. dribbble.com
33. dudepins.com
34. e-monsite.com
35. edocr.com
36. edublogs.org
37. esporteblog.com.br
38. estranky.cz
39. etsy.com
40. facebook.com
41. fashionblogg.se
42. flixya.com
43. flog.pl
44. folkd.com
45. fotopages.com
46. foursquare.com
47. freeblog.hu
48. futblog.com.br
49. gamingblog.com.br
50. gays.com
51. getglue.com
52. glogster.com
53. goodreads.com
54. gospeltube.com
55. grindtv.com
56. hautetfort.com
57. identi.ca
58. infoblog.cz
59. instructables.com
60. issuu.com
61. journalspace.com
62. judysbook.com
63. jukeboxalive.com
64. jux.com
65. kazeo.com
66. kl1p.com
67. linkedin.com
68. list.ly
69. livejournal.com
70. liveleak.com
71. lookuppage.com
72. loveblog.com.br
73. manteresting.com
74. metacafe.com
75. metroblog.com
76. mixcloud.com
77. motortopia.com
78. mouthshut.com
79. myblog.de
80. myplick.com
81. myspot.pl
82. netlog.com
83. nexopia.com
84. ology.com
85. ourstory.com
86. paper.li
87. pinterest.com
88. plerb.com
89. punchpin.com
90. quora.com
91. reddit.com
92. remcloud.com
93. sails.pl
94. scribd.com
95. skyrock.com
96. slashdot.org
97. slideboom.com
98. slideserve.org
99. slideshare.com
100. solidairesdumonde.org
101. soundcloud.com
102. soup.io
103. spaceblog.com.br
104. springpad.com
105. squidoo.com
106. startupnation.com
107. storify.com
108. streemo.pl
109. taringa.net
110. thatshow.com
111. tribe.net
112. tripadvisor.co.uk
113. twitter.com
114. ufosocial.com
115. unblog.fr
116. vimeo.com
117. vuvox.com
118. webeden.co.uk
119. weblogplaza.com
120. weheartit.com
121. wikihost.org
122. wikispot.org
123. wordpress.com
124. xing.com
125. xstreamist.com
126. yelp.com
127. yudu.com
128. zimbio.com

If you have anymore web 2.0 websites thats not listed than post it in the comment sections, and I will add them the list above.