TOTAL	$125M
FUNDING TOTAL	$125M
Series A, 10/07 Spark Capital Union Square Ventures John Borthwick Albert Wenger Fred Seibert	$750k
Series B, 12/08 Union Square Ventures Spark Capital	$4.5M
Series C, 4/10 Union Square Ventures Spark Capital	$5M
Series D, 11/10 Union Square Ventures Spark Capital Sequoia Capital	$30M
Venture Round, 9/11 Greylock Partners Insight Venture Partners The Chernin Group Sequoia Capital Spark Capital Union Square Ventures CrunchFund DFJ Growth	$85M

Competitors

Asaph, Posterous, spotengine, Bloglovin

Tumblr

Tumblr is a re-envisioning of tumblelogging, a subset of blogging that uses quick, mixed-media posts. The service hopes to do for the tumblelog what services like LiveJournal and Blogger did for the blog. The difference is that its extreme simplicity will make luring users a far easier task than acquiring users for traditional weblogging. Anytime a user sees something interesting online, they can click a quick “Share on Tumblr” bookmarklet that then tumbles the snippet directly. The result is varied string of media ranging links and text to pictures and videos that takes very little time and effort to maintain.

There is little to no learning curve involved in using tumblr. Features are intuitive and quick to establish. Users simply sign up and begin posting in a minute.

Tumblr is backed by Union Square Ventures, Spark Capital and Sequoia Capital.

Recent Milestones

Tumblr received $85M in Venture Round funding. (9/26/11)

Posted 9/26/11 at 6:19pm via finsmes.com
Tumblr added John Lilly as Board Observer. (9/1/11)

Posted 5/16/12 at 11:06am
Tumblr — Tumblr on verge of raising up to $100M with massive $800M valuation (8/26/11)

Posted 8/26/11 at 7:39pm via venturebeat.com
Tumblr — A Massive Solar Flare Of Activity Pushes Tumblr To 400 Million Pageviews A Day (6/27/11)

Posted 6/27/11 at 5:50pm via techcrunch.com
Tumblr added Blake Matheny as Senior Software Engineer. (5/1/11)

Posted 5/20/11 at 10:26am
Tumblr received $30M in Series D funding. (11/19/10)

Posted 11/22/10 at 7:46pm via techcrunch.com
Tumblr — Tumblr Rockets Past A Billion Posts (8/23/10)

Posted 8/25/10 at 1:00pm via techcrunch.com
Tumblr — Tumblr Is On Fire. Now Over 6 Million Users, 1.5 Billion Pageviews A Month (7/19/10)

Posted 7/19/10 at 6:56pm via techcrunch.com
Tumblr received $5M in Series C funding. (4/20/10)

Posted 4/20/10 at 9:07am via techcrunch.com
Tumblr received $4.5M in Series B funding. (12/11/08)

Posted 12/11/08 at 6:59am via techcrunch.com
Tumblr received $750k in Series A funding. (10/31/07)

Posted 10/19/07 at 7:11am via alleyinsider.com
Tumblr added David Karp as Founder. (1/1/07)

Posted 3/10/08 at 9:53am
Tumblr added Bijan Sabet as Director.

Posted 5/22/08 at 2:56pm
Tumblr added Marco Arment as Lead Developer.

Posted 4/28/09 at 1:09am
Tumblr added Brad Burnham as Director.

Posted 5/15/10 at 7:17pm
Tumblr added Jared Hecht as Business Development Manager.

Posted 8/25/10 at 3:26pm