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Understanding migration patterns and how they change over time has important implications for understanding broader population trends, effectively designing policy and allocating resources. However, data on migration movements are often lacking, and those that do exist are not produced in a timely manner. Social media data offer new opportunities to provide more up-to-date demographic estimates and to complement more-traditional data sources. Facebook, for example, can be thought of as a large digital census that is regularly updated. However, its users are not representative of the underlying population, thus using the data without appropriate adjustments would lead to biased results. This chapter discusses the use of social media advertising data to estimate migration over time. A statistical framework for combining traditional data sources and the social media data is presented, which emphasizes the importance of three main components: adjusting for non-representativeness in the social media data; incorporating historical information from reliable demographic data; and accounting for different errors in each data source. The framework is illustrated through an example that uses data from Facebook’s advertising platform to estimate migrant stocks in North America.
In this chapter, we discuss the issue of market power in the online video field, which is arguably the most troubling aspect of this emerging online video system. We analyze the options of dealing with market power of online video platforms. They include the delegation of regulation to the industry; regulation as a public utility; provision by a public enterprise; licensing and registration; ownership restrictions; limits to foreign ownership and provision; antitrust breakup, functional separations, and unbundling; and interconnection. We concluded with a recommended “Open Video System” based on access rights to infrastructure and platform elements, where significant media market power (SMMP) exist. Such access would be accomplished through API software interfaces that must be offered by such platforms. (APIs), a way to let software by other parties interoperate with the platform’s software. Conditions of access would be governed by the non-discriminatory principle of “most favored nation,” subject to arbitration by a self-administrative process. A key role would be played by the personal information management curators. They would engage, in the consumer’s behalf, in the finding, selecting, and screening of appropriate content and infrastructure, as well as in the protection of personal data, They would be able to supply their own algorithms. Such an Open Video System does not solve all policy problems, and it needs to be limited when it comes to content or data. But it reduces the problem of market power of the platforms and its global extension. It will create, without breakups, a more competitive video cloud market. In doing so it reduces the need for detailed governmental control and oversight.
This chapter summarizes several of the analyses and empirical findings from other chapters: economic and technological drivers of change, new types of content, the emergence of video cloud providers, their market power, and their impact on other media industries and on society. This leads to a number of business and policy strategies, and to a recommended access arrangement.