Algorithms are ubiquitous and critical sources of information online, increasingly acting as
gatekeepers for users accessing or sharing information about virtually any topic, including …

We present the largest and most detailed measurement of online tracking conducted to date,
based on a crawl of the top 1 million websites. We make 15 types of measurements on each …

Important decisions about people are increasingly made by algorithms: Votes are counted;
voter rolls are purged; financial aid decisions are made; taxpayers are chosen for audits; air …

It has been argued that the Internet and social media increase the number of available
viewpoints, perspectives, ideas and opinions available, leading to a very diverse pool of …

Today, many e-commerce websites personalize their content, including Netflix (movie
recommendations), Amazon (product suggestions), and Yelp (business reviews). In many …

Search engines provide a window into the changing association between websites and
keywords across cultures and countries and over time. As such, they offer journalism and …

To cope with the immense amount of content on the web, search engines often use complex
algorithms to personalize search results for individual users. However, personalization of …

There is a growing concern about the extent to which algorithmic personalization limits
people's exposure to diverse viewpoints, thereby creating “filter bubbles” or “echo …

Today's Web services–such as Google, Amazon, and Facebook–leverage user data for
varied purposes, including personalizing recommendations, targeting advertisements, and …

Adblocking tools like Adblock Plus continue to rise in popularity, potentially threatening the
dynamics of advertising revenue streams. In response, a number of publishers have ramped …