Rob,
it looks nice so far. I agree that a lot depens on the content (and validity) of RSS feed itself. In ideal case I would like to see something like this
-----------------------------------
Site/RSS Name
Generation Date
TOC:
Article name 1 (<--Link)
Article name 2 (<--Link)
Article name 3 (<--Link)
...
Article name 1
Picture
Text
...
And NO comments

-----------------------------------
On practice though, it means that one needs to scan RSS feed, then follow URL to an article, and grab only meanfull part of Ads infested page. So you need to know page structure of every site and follow its changes. In Gizmodo case it would be everything between
Code:
<div class="PostText">
</div>
And that's a lot of hard work

And I believe that Sony should do it
Small thing. Instead of source code,
http://www.mysonyreader.com/index_commented.phps page redirects to Gizmodo pdf.