90% Of Users Join Tumblr From Blogs, 85% Of Those Users Are Still Blogging A Week Later

90% Of Users Join Tumblr From Blogs, 85% Of Those Users Are Still Blogging A Week Later
http://techcrunch.com/2011/05/26/90-of-users-join-tumblr-from-blogs-85-of-those-users-are-still-blogging-a-week-later/