Marissa Mayer says she wants to "let Tumblr be Tumblr" after acquiring David Karp's microblogging service for $1.1 billion. But the bigger problem for Yahoo might be porn pages that don't reveal enough.
Instead of just selling us more useless things, these advertisers and marketers are helping to package and make popular the idea of doing good and responsible business.
A new HBO documentary looks at the work of street artist JR, whose giant portraits force people in troubled areas to confront the humanity that’s all around them.
