1. savafav
2. 30daytags
3. BlinkBits
4. BlogHop
5. BlogLot
6. BlogMarks
7. BlogMemes
8. BlogPulse
9. BmAccess
10. browsr
11. Fark
12. CiteULike
13. clipclip
14. clipmarks
15. Complore
16. Connectedy
17. Connotea
18. de.lirio.us
19. del.icio.us
20. digg
21. diigo
22. fantacular
23. Feedmarker
24. Feed Me Links
    
25. Furl
26. Gibeo
27. GoKoDo
28. GoogleNotebook
29. Hyperlinkomatic
30. igooi
    
31. IceRocket
32. Kaboodle
33. Kinja
34. Lilisto
    
35. linkaGoGo
36. linkfilter
37. linkroll
38. Listible
39. Lookmarks
40. ma.gnolia
41. Mesfavs
    
42. Netvouz
43. Newsvine
44. openBM
45. pe.oples
    
46. RawSugar
47. reddit
48. Rojo
49. Rollyo
50. rssmicro
    
51. Scuttle
52. Shadows
53. Simpy
54. Sitetagger
55. Smarking
56. Spurl
57. StumbleUpon
58. taghop
59. tagtooga
    
60. TailRank
61. Ticklr
62. unalog
63. Yahoo My Web 2.0
64. yoonoo
65. Shoutwire
66. popurls
67. NowPublic
68. gravee
69. wirefan
70. jumptags
71. ebooknetworking
72. pickorflick
73. devbumb
74. excites
75. sutree
76. eyje
77. linkboy
78. uvouch
79. jigg
80. netscape
81. tagspace
82. spotplex
83. awordofhelp
84. connectedy
85. wiklink
86. oyax
87. sync2it
88. tagza
89. thethingsiwant
90. urlex
91. web-feeds
92. wists
93. wurldbook
94. iglobecity
95. tektag
96. linklog
97. cloudytags
98. linkatopia
99. otavo
100. getboo
101. sirlook
102. bookit
103. listmixer
104. Web2announcer
105. A1-webmarks
106. googlelens
107. stirrdup
108. Bookmark4you
109. squidoo
110. Zurpy

Pls feel free to add some more on the list..