Appendix B. Case Study: Media Sharing

<feature><title>What You’ll Learn in This Case Study</title> <objective>

How tags enable object-centered sociality

</objective>
<objective>

A comparison of tagging approaches at popular media-sharing Web sites

</objective>
<objective>

Deep tagging and other variations on tagging videos

</objective>
</feature>

In this case study we’ll consider the value of tags in media-sharing applications. Media sharing is a general term for Web sites that allow users to share photos, videos, music, and other kinds of digital media with each other.

The examples in this case study cover a broad swath of tagging systems. We have the simplest systems to full-blown collaborative tagging systems.

How Media Sharing Works

As long as we’ve ...

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