You can post video links from google, youtube, break, yahoo, myspace and many others by simply pasting the video link. Once you submit the message, it will automatically appear as a playable movie in the message, as seen below.
Google Example
http://video.google.com/videoplay?docid=3203596276754701357&hl=en
Youtube example
http://youtube.com/watch?v=UxfDObpWTiU
Break.com Example
http://break.com/index/snowball-crushes-kid.html?matchid=NDM1MzM5
Google Example
http://video.google.com/videoplay?docid=3203596276754701357&hl=en
Youtube example
http://youtube.com/watch?v=UxfDObpWTiU
Break.com Example
http://break.com/index/snowball-crushes-kid.html?matchid=NDM1MzM5