Since I posted my proposal for a DIY Google Reader Webring I've had 5 bloggers take up the gauntlet: bookn3rd, Book Trout, Bibliophile Bullpen, Exile Bibliophile, and Condalmo. Worthy reads all.
Laura at bookn3rd was having issues with the method I described, so she found this Wordpress Google Reader Widget that does the same thing.
I still have more slots if anyone else wants to participate. I'm trying to figure out how to squeeze stats on this from Google Analytics but no luck yet.