Tumblr raises 4.5M for micro blogging platform
By Azam on December 12, 2008 Add a Comment 
Tumblr the micro blogging platform raises $4.5 M form investors lead by Spark Capital and Union Square Ventures. Traffic on Tumblr has grown 6x in the past year and now reaches over 15 million monthly uniques through more than 500,000 publishers…
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