Microsoft Popfly is a web site comprising a social network (the Popfly Space), a tool (the Popfly Creator), and an optional Visual Studio plug-in (the Popfly Explorer), which together allow you to create and combine web content for sharing with others. This book introduces Popfly and shows how you can use it to: Create web content mashups by connecting predefined building blocks on a design surface; no programming required. Create a Popfly hosted web page incorporating one or more mashups. Include mashups in your social network profiles, as sidebar gadgets on your Windows Vista desktop, and more. Make Popfly friends, share content with them, and rate their projects. Use Popfly Explorer to share Visual Studio projects and make them accessible from anywhere. And just for fun: the book concludes with an example of how Microsoft Popfly may be combined with another mashup technology, Yahoo Pipes, to create even more innovative web content.