This document discusses several social media and user-generated content websites, summarizing what each site allows users to do, how it is an example of web 2.0 technology, and how it impacts both media audiences and producers. The sites discussed include photo sharing sites, social networking sites, microblogging sites, video sharing sites, and crowdfunding sites. Each summary provides a high-level overview of the site's purpose and user functionality as well as how it enables participation and sharing of content.