I set up my own version of this with some minor improvements. (Inspired by Instapaper's Send To) Specifically:
EASY! No need to install my URI handler script. Provided you're using 1.8 sneakypeeks or the iPhone, it just works like magic.
PRETTY! There's an OmniFocus icon on it! And a favicon!
INFORMATIONAL! It updates its text to let you know that it's working.
CLEAN! It closes itself when it's done. (Well, unless you go to the page directly)
FAULT TOLERANT! If you haven't sent a "name" for the item, it lets you know.
To set it up, use the following as your Send To URL in Google Reader:
The icon is at http://omnifocus.nik.me/OmniFocus-16.png
Y'all can feel free to use my URL. I've got plenty of bandwidth for these teeny tiny pages. :)