I love Google Reader. I used to try to remember webcomics, then I bookmarked them, and now with RSS I'm quite happy.
That said, it doesn't deal with embedded images (Achewood) and of course doesn't deal with comics that don't include the image.
I've written some simple RSS proxies inspired by/copied from
http://henrik.nyh.se/ and put them up for general use.
http://devalue.org/rss/ctrlaltdel.php - Ctrl-Alt-Del: expands both main comics and "sillies"
http://devalue.org/rss/sinfest.php - Sinfest
http://devalue.org/rss/somethingpositive.php - Something Positive (for various reasons, this won't always work.)
http://devalue.org/cgi-bin/achewood.py - Achewood: this also adds the alt text to the description.
The modified feed is cached for a minimum of 30 minutes.
This process is generally quite simple, so let me know if there's another comic RSS you'd like me to fix.