This plugin will add a noembed section no any embedded content that does not already have one. This is very handy for people reading your site in an RSS reader, as a lot of them don’t display embedded content. By default it will put this message in there:
There is embedded content here that you cannot see. Please open the post in a web browser to see this
Additionally, for YouTube and GameVidoes content, it will also display the thumbnail of the video in the noembed section.