Every now and then I add a YouTube video to my posts... but one of the biggest problem is that reader that read the RSS feed don't get the video, because all the feedreaders I know don't render the object or embed tags, the one used to display the flash player for the youtube video.
A few weeks ago I found a very nice WLW plugin, that allow you to select a video from youtube, google video or MSN SoapBox, add it to your post using a javascript function that renders as embed in a full featured browser, or as image linked to the video page in a browser that doesn't support objects.
If you look my previous post on the blog, and using an RSS feed you will see the result of what I'm speaking about.
The plugin is Insert Video, developed by Scøtt Lovegrove.