Which-50: Tumblr surges since Yahoo deal, averaging 250,000 new blogs and 80,000,000 new posts a day.
Almost unnoticed, Yahoo CEO Marissa Mayers’s decision to buy Tumblr has given the micro-blogging social network beloved by teenagers (and Which-50 publishers) a massive boost.
Which-50 has tested the numbers, and in just eight weeks since the deal was sealed Tumblr has added 14 million new blogs…