I was just wondering that which type of ads in Google adsense yields the highest revenues?? Anybody any ideas.

Bing has shown fluctuations in its SERP's on New Year's Day. It seems that Bing search algorithm was going on an update. Has anybody seen this?

Can anybody explain to me what is a heatmap? and the importance of it.

What should I do to make my readers come back to my blog again and again? Any kind of tips regarding this will be much appreciated.

When it comes to gaining backlinks, how do you guys do it? I mean links can be gained through blog commenting, forum signature submission, article submission etc, but when it comes to building links from high valued domains such as PR5 or PR6, or rather domains having DA above then 50 or 60 it seems impossible. Guest posting can be done in some cases but it takes too long to get approved even if it get approved.

My website keywords ranking are potential, but i am not getting traffic, what to do for increasing traffic, please share some valuable information ?

How to perform a detailed analysis of Google Keyword Planner's keywords? such as total searches ,ads value etc.

From the last couple of days I have been getting many requests about the latest list of social bookmarking sites. Many bloggers have asked me about social bookmarking sites list with high DA & PA, as now Google is not going to update the PR. So, I am proving the list.
1. <!-- m --><a class="postlink" href="https://www.librarything.com/">https://www.librarything.com/</a><!-- m -->
2. <!-- m --><a class="postlink" href="http://www.stumbleupon.com/">http://www.stumbleupon.com/</a><!-- m -->
3. <!-- m --><a class="postlink" href="https://delicious.com/">https://delicious.com/</a><!-- m -->
4. <!-- m --><a class="postlink" href="http://www.reddit.com/">http://www.reddit.com/</a><!-- m -->
5. <!-- m --><a class="postlink" href="http://www.bloomberg.com/">http://www.bloomberg.com/</a><!-- m -->
6. <!-- m --><a class="postlink" href="http://www.citeulike.org/">http://www.citeulike.org/</a><!-- m -->
7. <!-- m --><a class="postlink" href="http://www.examiner.com/">http://www.examiner.com/</a><!-- m -->
8. <!-- m --><a class="postlink" href="https://www.tumblr.com/">https://www.tumblr.com/</a><!-- m -->
9. <!-- m --><a class="postlink" href="http://friendfeed.com/">http://friendfeed.com/</a><!-- m -->
10. <!-- m --><a class="postlink" href="https://www.google.com/bookmarks/">https://www.google.com/bookmarks/</a><!-- m -->
11. <!-- m --><a class="postlink" href="http://www.plurk.com/top/">http://www.plurk.com/top/</a><!-- m -->
12. <!-- m --><a class="postlink" href="http://digg.com/">http://digg.com/</a><!-- m -->
13. <!-- m --><a class="postlink" href="https://www.diigo.com/">https://www.diigo.com/</a><!-- m -->
14. <!-- m --><a class="postlink" href="http://slashdot.org/">http://slashdot.org/</a><!-- m -->
15. <!-- m --><a class="postlink" href="http://www.bibsonomy.org/">http://www.bibsonomy.org/</a><!-- m -->
16. <!-- m --><a class="postlink" href="http://technorati.com/">http://technorati.com/</a><!-- m -->
17. <!-- m --><a class="postlink" href="http://www.jumptags.com/">http://www.jumptags.com/</a><!-- m -->
18. <!-- m --><a class="postlink" href="http://linkarena.com/">http://linkarena.com/</a><!-- m -->
19. <!-- m --><a class="postlink" href="http://www.fark.com/">http://www.fark.com/</a><!-- m -->
20. <!-- m --><a class="postlink" href="http://www.scoop.co.nz/">http://www.scoop.co.nz/</a><!-- m -->
21. <!-- m --><a class="postlink" href="http://www.newsvine.com/">http://www.newsvine.com/</a><!-- m -->
22. <!-- m --><a class="postlink" href="http://www.mister-wong.com/">http://www.mister-wong.com/</a><!-- m -->
23. <!-- m --><a class="postlink" href="http://www.squidoo.com/">http://www.squidoo.com/</a><!-- m -->
24. <!-- m --><a class="postlink" href="http://cnets.indiana.edu/">http://cnets.indiana.edu/</a><!-- m -->
25. <!-- m --><a class="postlink" href="http://www.care2.com/">http://www.care2.com/</a><!-- m -->
26. <!-- m --><a class="postlink" href="http://www.yardbarker.com/">http://www.yardbarker.com/</a><!-- m -->
27. <!-- m --><a class="postlink" href="http://www.twoo.com">http://www.twoo.com</a><!-- m -->
28. <!-- m --><a class="postlink" href="http://blinklist.com/">http://blinklist.com/</a><!-- m -->
29. <!-- m --><a class="postlink" href="http://www.folkd.com/">http://www.folkd.com/</a><!-- m -->
30. <!-- m --><a class="postlink" href="http://www.cheezburger.com/">http://www.cheezburger.com/</a><!-- m -->
31. <!-- m --><a class="postlink" href="http://wwwhatsnew.com/">http://wwwhatsnew.com/</a><!-- m -->
32. <!-- m --><a class="postlink" href="http://www.pearltrees.com/">http://www.pearltrees.com/</a><!-- m -->
33. <!-- m --><a class="postlink" href="http://www.metafilter.com/">http://www.metafilter.com/</a><!-- m -->
34. <!-- m --><a class="postlink" href="http://www.allvoices.com/">http://www.allvoices.com/</a><!-- m -->
35. <!-- m --><a class="postlink" href="http://blogmarks.net/">http://blogmarks.net/</a><!-- m -->
36. <!-- m --><a class="postlink" href="http://twicsy.com/">http://twicsy.com/</a><!-- m -->
37. <!-- m --><a class="postlink" href="http://www.43things.com/">http://www.43things.com/</a><!-- m -->
38. <!-- m --><a class="postlink" href="https://www.memotoo.com/">https://www.memotoo.com/</a><!-- m -->
39. <!-- m --><a class="postlink" href="http://netvouz.com/">http://netvouz.com/</a><!-- m -->
40. <!-- m --><a class="postlink" href="http://designbump.com/">http://designbump.com/</a><!-- m -->
41. <!-- m --><a class="postlink" href="http://it.toolbox.com/">http://it.toolbox.com/</a><!-- m -->
42. <!-- m --><a class="postlink" href="http://kirtsy.com/">http://kirtsy.com/</a><!-- m -->
43. <!-- m --><a class="postlink" href="http://www.diggita.it/">http://www.diggita.it/</a><!-- m -->
44. <!-- m --><a class="postlink" href="http://www.soup.io/">http://www.soup.io/</a><!-- m -->
45. <!-- m --><a class="postlink" href="http://www.ebaumsworld.com/">http://www.ebaumsworld.com/</a><!-- m -->
46. <!-- m --><a class="postlink" href="http://killerstartups.com/">http://killerstartups.com/</a><!-- m -->
47. <!-- m --><a class="postlink" href="http://pinboard.in/">http://pinboard.in/</a><!-- m -->
48. <!-- m --><a class="postlink" href="http://youmob.com/">http://youmob.com/</a><!-- m -->
49. <!-- m --><a class="postlink" href="http://offline.social-bookmarking.net/">http://offline.social-bookmarking.net/</a><!-- m -->
50. <!-- m --><a class="postlink" href="http://buddymarks.com/">http://buddymarks.com/</a><!-- m -->
51. <!-- m --><a class="postlink" href="http://www.sitepronews.com/">http://www.sitepronews.com/</a><!-- m -->
52. <!-- m --><a class="postlink" href="http://www.linkagogo.com/">http://www.linkagogo.com/</a><!-- m -->
53. <!-- m --><a class="postlink" href="http://www.shoutwire.com/">http://www.shoutwire.com/</a><!-- m -->
54. <!-- m --><a class="postlink" href="http://www.digo.it/">http://www.digo.it/</a><!-- m -->
55. <!-- m --><a class="postlink" href="http://www.bloggingcanadians.ca/">http://www.bloggingcanadians.ca/</a><!-- m -->
56. <!-- m --><a class="postlink" href="http://www.wirefan.com/">http://www.wirefan.com/</a><!-- m -->
57. <!-- m --><a class="postlink" href="http://mybookmarks.com/">http://mybookmarks.com/</a><!-- m -->
58. <!-- m --><a class="postlink" href="http://shetoldme.com/">http://shetoldme.com/</a><!-- m -->
59. <!-- m --><a class="postlink" href="http://www.panodigg.com/">http://www.panodigg.com/</a><!-- m -->
60. <!-- m --><a class="postlink" href="http://www.a1-webmarks.com/">http://www.a1-webmarks.com/</a><!-- m -->
61. <!-- m --><a class="postlink" href="http://www.blogengage.com/">http://www.blogengage.com/</a><!-- m -->
62. <!-- m --><a class="postlink" href="http://voo2do.com/">http://voo2do.com/</a><!-- m -->
63. <!-- m --><a class="postlink" href="http://www.ngopost.org/">http://www.ngopost.org/</a><!-- m -->
64. <!-- m --><a class="postlink" href="http://ww2.ikeepbookmarks.com/">http://ww2.ikeepbookmarks.com/</a><!-- m -->
65. <!-- m --><a class="postlink" href="http://www.blogospherenews.com/">http://www.blogospherenews.com/</a><!-- m -->
66. <!-- m --><a class="postlink" href="http://www.favoor.com/">http://www.favoor.com/</a><!-- m -->
67. <!-- m --><a class="postlink" href="http://www2.myhq.com/">http://www2.myhq.com/</a><!-- m -->
68. <!-- m --><a class="postlink" href="http://www.bookmark-manager.com/">http://www.bookmark-manager.com/</a><!-- m -->
69. <!-- m --><a class="postlink" href="http://www.bookmax.net/">http://www.bookmax.net/</a><!-- m -->
70. <!-- m --><a class="postlink" href="http://www.colivia.de/">http://www.colivia.de/</a><!-- m -->
71. <!-- m --><a class="postlink" href="http://factson37.com/">http://factson37.com/</a><!-- m -->
72. <!-- m --><a class="postlink" href="http://softsblog.com/">http://softsblog.com/</a><!-- m -->
73. <!-- m --><a class="postlink" href="http://mx1.webmastershowcase.com.au/">http://mx1.webmastershowcase.com.au/</a><!-- m -->
74. <!-- m --><a class="postlink" href="http://bligg.be/">http://bligg.be/</a><!-- m -->
75. <!-- m --><a class="postlink" href="http://www.szallasport.com/">http://www.szallasport.com/</a><!-- m -->
76. <!-- m --><a class="postlink" href="http://newsmeback.com/">http://newsmeback.com/</a><!-- m -->
77. <!-- m --><a class="postlink" href="http://fazed.net/">http://fazed.net/</a><!-- m -->
78. <!-- m --><a class="postlink" href="http://url.org/">http://url.org/</a><!-- m -->
79. <!-- m --><a class="postlink" href="http://www.dealigg.com/">http://www.dealigg.com/</a><!-- m -->
80. <!-- m --><a class="postlink" href="http://www.dnhour.com/">http://www.dnhour.com/</a><!-- m -->
81. <!-- m --><a class="postlink" href="http://www.bmaccess.net/">http://www.bmaccess.net/</a><!-- m -->
82. <!-- m --><a class="postlink" href="http://pulsimo.com/">http://pulsimo.com/</a><!-- m -->
83. <!-- m --><a class="postlink" href="http://www.huip.de/">http://www.huip.de/</a><!-- m -->
84. <!-- m --><a class="postlink" href="http://www.babblestorm.co.uk/">http://www.babblestorm.co.uk/</a><!-- m -->
85. <!-- m --><a class="postlink" href="http://friendsite.com/">http://friendsite.com/</a><!-- m -->
86. <!-- m --><a class="postlink" href="http://zabox.net/">http://zabox.net/</a><!-- m -->
87. <!-- m --><a class="postlink" href="http://www.craftjuice.com/">http://www.craftjuice.com/</a><!-- m -->
88. <!-- m --><a class="postlink" href="http://abcphp.com/">http://abcphp.com/</a><!-- m -->
89. <!-- m --><a class="postlink" href="http://www.sitejot.com/">http://www.sitejot.com/</a><!-- m -->
90. <!-- m --><a class="postlink" href="http://www.tatilsetatil.com/">http://www.tatilsetatil.com/</a><!-- m -->
91. <!-- m --><a class="postlink" href="http://www.detroitinstitute.org/">http://www.detroitinstitute.org/</a><!-- m -->
92. <!-- m --><a class="postlink" href="http://www.lepiocheur.com/">http://www.lepiocheur.com/</a><!-- m -->
93. <!-- m --><a class="postlink" href="http://www.tourdion.com/">http://www.tourdion.com/</a><!-- m -->
94. <!-- m --><a class="postlink" href="http://addthismark.com/">http://addthismark.com/</a><!-- m -->
95. <!-- m --><a class="postlink" href="http://www.startaid.com/">http://www.startaid.com/</a><!-- m -->
96. <!-- m --><a class="postlink" href="http://www.augmentedviews.com/">http://www.augmentedviews.com/</a><!-- m -->
97. <!-- m --><a class="postlink" href="http://www.mostfashionable.com/">http://www.mostfashionable.com/</a><!-- m -->
98. <!-- m --><a class="postlink" href="http://www.yoomark.com/">http://www.yoomark.com/</a><!-- m -->
99. <!-- m --><a class="postlink" href="http://www.socialfans.info/">http://www.socialfans.info/</a><!-- m -->
100. <!-- m --><a class="postlink" href="http://www.purren.com/">http://www.purren.com/</a><!-- m -->
101. <!-- m --><a class="postlink" href="http://www.webmarks.org/">http://www.webmarks.org/</a><!-- m -->

Note- Please feel free to update the list.

What are the basic points in B2C content marketing that one should remember? Any kind of tips and suggestions are most welcome.

Share your experiences of Email Marketing. As like how old is your mailing list, how long is your list, how much conversions are you getting from it etc.