If you are looking for an easy way to display slide shows in Clearspace, we have a SlideShare Macro plugin that lets anyone display a slide show presentation in documents, blog posts, and threads.

You can use this plugin to display SlideShare presentations, but it also provides a simple example code to illustrate how you can use a plugin to display media from other online sources in Clearspace as embedded content. You can learn more about the plugin or just download the code from svn.

A quick example: