Upload videos to your profile to share. It could be that you want to show a friend a highlight from a favorite game. Maybe you had someone film your match and would like to share with your teamates. Link from any of the video providers : Youtube, Yahoo Video, Flickr, Meta Cafe, Vimeo, etc. Just add the url of the video when uploading.
Videos are interactive of course and can be commented on and can be shared on other social networking sites.