Userscript that embeds media in FriendFeed comments through oEmbed. Actually it's a simple wrapper around jquery-oembed http://code.google.com/p/jquery-oembed/ . jquery-oembed uses http://oohembed.com to get some providers. Plain images are also embedded
https://friendfeed.com/scotu/71093344/interessa-qualcuno-uno-userscipt-che-fa-questo