-
Founed
Tumblr was founded by David Karp in Febreuary 2007. -
Launched
Tumblr was launched on April 27, 2007 by David Karp -
IPhone App
With Tumblr's 2009 acquisition of Tumblerette, an Apple Inc. App Store application created by Jeff Rock and Garrett Ross, the service launched its official iPhone app in 2009 -
Period: to
Retention Rate
In 2009, Tumblr had an 85% retntion rate, compared with 40% of Twitter. -
Recognitions
August 1, 2009, David Karp was named Best Young Tech Tech Entrepreneur 2009 by BusinessWeek. -
Available on BlackBerry smartphone
Tumbr became available on BlackBerry smartphoe on April 17 ,2010 via a Mobelux application in the BlackBerry App World. -
Recognitions
In August 2010 Tumblr was named as a finalist in Lead411's New York City Hot 125. -
President Obama's Blog
On October 21, 2011, Tumblr became the first bloggong platform to host President Obama's Blog -
Period: to
Brand Advertise-Campeign
in June 2012, Tumblr feautred it's first major brand advertising campeign in conjinction with Adidas, -
Blogs & Posts
In August 20,2012 Tumblr had over 69.4 million blogs and more than 29.8 billion total posts
