https://moodle.english.ttu.edu/user/view.php?id=2727&course=1
https://moodle.english.ttu.edu/blog/index.php?postid=146
https://moodle.english.ttu.edu/blog/index.php?postid=147
http://sage.cs.berkeley.edu/user/view.php?id=2587&course=1
http://sage.cs.berkeley.edu/blog/edit.php?action=edit&id=163
http://social.msdn.microsoft.com/profile/phanajan/
http://infospace.ischool.syr.edu/2010/02/08/article-decline-in-us-teen-blogging/