Tumbling toward $100 million

Tumbler, a blogger service growing in popularity, is nearing $75-$100 million in venture capital.

This estimation implies a market value of near $800 million according to the Wall Street Journal. One of the larger firms taking part in the deal is Greylock Partners, whose portfolio companies include daily deals company, Groupon, and bed-for-rent service, Airbnb. Tumblr counts Spark Capital, Union Square Ventures, and Sequoia Capital, among its existing investors, according to its website.