For maps, YouTube videos, etc.

Like an image can be uploaded, have a type giving back a view of a (say) YouTube video, by inserting code like the ones http://www.keewy.fr/tools/gandiblog.php would generate.

  --lunra xanto.....Thu Jan 24 16:17:16 PST 2008

That's a potentially big etc. Possibilities:

• Feeds - enter a URL to an RSS or Atom feed in edit mode, and render a list of links to items in the feed. See http://www.feedroll.com/rssviewer for an example. See generate feeds for specs, etc.
  
• ??