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The category definition says that:
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Candidates for the Research and Scholarship (R&S) Category are Service Providers that are operated for the purpose of supporting research and scholarship interaction, collaboration or management, at least in part.
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Example Service Providers may include (but are not limited to) collaborative tools and services such as wikis, blogs, project and grant management tools that require some personal information about users to work effectively. This Entity Category should not be used for access to licensed content such as e-journals.
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Broadly this means that R&S is intended for platforms and services used by researchers where some sort of collaboration, discussion or interaction is required, making the release of personally identifiable information necessary for the service to work properly. Think about issues like:
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