A main characteristic of social media is that its diverse content, copiously generated by both standard outlets and general users, constantly competes for the scarce attention of large audiences. Out of this flood of information some topics manage to get enough attention to become the most...

We track information diffusion in real time by monitoring how the news is tweeted and retweeted on Twitter. We find that news diffusion is highly correlated with intraday trading, especially for retail trading. News diffusion leads to a lower bid-ask spread and price pressure on the news day...

We present a method for accurately predicting the long time popularity of online content from early measurements of user's access. Using two content sharing portals, Youtube and Digg, we show that by modeling the accrual of views and votes on content offered by these services we can predict the...

In recent years, social media has become ubiquitous and important for social networking and content sharing. And yet, the content that is generated from these websites remains largely untapped. In this paper we demonstrate how social media content can be used to predict real-world outcomes. In...

Scholars, advertisers and political activists see massive online social networks as a representation of social interactions that can be used to study the propagation of ideas, social bond dynamics and viral marketing, among others. But the linked structures of social networks do not reveal...

The ever-increasing amount of information owing through Social Media forces the members of these networks to compete for attention and influence by relying on other peopleto spread their message. A large study of information propagation within Twitter reveals that the majority of users act as...

There has been a tremendous rise in the growth of online social networks all over the world in recent years. It has facilitated users to generate a large amount of real-time content at an incessant rate, all competing with each other to attract enough attention and become popular trends. While...

There is ample evidence that while the ratio of contributions to their consumption is indeed small, the growth in content provision in social media persists at levels that are hard to understand if analyzed from a public goods point of view. Our studies show that the puzzle is explained by the...