Up-and-comer writer Shea Serrano was just hoping someone would buy his $12 rap book. What he got was a spot on the New York Times’ best-sellers list and a social media marketing machine that can help other writers sell books.

Codebreaker's latest episode asks if 'going viral' is evil; it might be.

Marketplace Tech and Tech Insider go viral.

YouTubers flock to Los Angeles, and an entertainment industry that caters to them.

With a surprise climate agreement and Alibaba's huge sale, a lot's happening in China.

Social media stunts for charity aren't uncommon, but do they raise any money?

Marketers are pushing female strength to capitalize on a national movement.

A look through Marketplace.org's popular online stories.

About those viral photos you see flying around from the Olympics...