This article introduces a transaction cost economic framework for interpreting the roles consumers play in social networking services (“SNSs”). It explains why the exchange between consumers and SNSs is not simple and discrete, but rather a continuous transaction with atypical attributes....

Payment systems that allow people to pay using their mobile phones are promised to reduce transaction fees, increase convenience, and enhance payment security. New mobile payment systems also are likely to make it easier for businesses to identify consumers, to collect more information about...

Most Americans have not heard of 'Do Not Track,' a proposal to allow Internet users to exercise more control over online advertising. However, when probed, most prefer that Do Not Track block advertisers from collecting data about their online activities. This is a much more privacy-protective...

At UC Berkeley, we are informing political debates surrounding online privacy through empirical study of website behaviors. In 2009 and 2011, we surveyed top websites to determine how they were tracking consumers. We found that advertisers were using persistent tracking technologies that were...

The ubiquity of mobile phones has long promised to spell the success of mobile payment platforms — a world in which the phone is a universal currency and no one needs plastic. While such predictions have proven mostly fruitless in the past, there is increasing evidence that the next few years...

Retailers such as Apple and Amazon market digital media to consumers using the familiar language of product ownership, including phrases like “buy now,” “own,” and “purchase.” Consumers may understandably associate such language with strong personal property rights. But the license...

Google has come to symbolize the tensions between the benefits of innovative, information-dependent new services and the desire of individuals to control the contexts in which personal information is used. This essay reviews hundreds of newspaper articles where Google speaks about privacy in an...