Tumblr

For making good-looking blogs easy to make and for becoming a de facto tool for traditional magazines and newspapers. Tumblr is popular and only getting more so. Its 30 million blogs now get 13 billion pageviews per month, compared to 2 billion at the beginning of 2011. The minimalist blogging platform is used by amateur bloggers and massive media outlets alike, appealing to users who like its simple and well-designed aesthetic choices. It has become such a phenomenon and creator of phenomena that it recently hired its own curators to surface the best stuff on the platform. In September 2011 Tumblr announced it had raised $85 million in venture capital funding, giving the company an estimated valuation of $800 million.