Tumblr Raises Another $5 Million in Funding

Mashable, April 20, 2010

Tumblr has just announced another healthy influx of cash — $5 million from Spark and Union Square Ventures — nearly doubling the $5.2 million raised in A and B rounds of financing. The popular mini-blog company has been testing and optimizing various paid features for a while and hopes 2010 will bring it further down the road to profitability