[SharePoint 2010 - Developpement] Allow embedded youtube video in blog post content (as content editor webpart), with new embedded youtube code (iframe) for SharePoint 2010 blog post

What is that ?

Based on this excellent tutorial from kirk Evans : http://blog.evepoints.com/2010/11/add-video-sharepoint-2010-blog.html
This will allow you to add youtube video in a blog content.
Basic sharepoint feature permit you to add the video by modifying the HTML code, from the Insert HTML button of sharepoint, but that is not really user friendly.
Preview, on a blog post :