Marc Canter really wants to see pictures of people’s faces in RSS feeds.

This is very similar, but not exactly the same as, the purpose of the <image> sub-element of <channel> in RSS 0.91 - 2.0.

So:

<b><a href="http://www.myelin.co.nz/wcswiki/w/ImagesInRss">Proposed RSS extension: &lt;i:image&gt;</a></b>