What is Tumblr--a blogging site, a microblogging ecosystem, a social media site?
" . . . . register for an account and an entire microblogging ecosystem materialises. Photos, videos, text and other entries can be "reblogged" and marked with "likes", and individual Tumblr blogs (rather than users) can be followed. Popular posts may accrue hundreds or thousands of "notes": short comments, likes and reblogs. Mr Karp said in 2012 that each original item posted to Tumblr is reblogged nine times on average, which means about 10% of items posted on Tumblr are original; most are reblogs of items posted by others. Tumblr lets the mash-up/remix generation express themselves by sharing, curating and collating items of interest.A survey of American internet users found that Tumblr was the most popular site among those aged 13-25.This seems to stem from its embrace of sharing, combined with its social looseness: unlike on Facebook, real names aren't required (only an e-mail address), and users can present different personalities to the world through different blogs. Tumblr is, in a way, the anti-Facebook—a social network where you do not have to be friends with your mother. Buying Tumblr thus gives Yahoo a much stronger position in the field of social networking . . ." (source The Economist)