Does anyone here know of any other embeddable comments/reviews type widgets like the Google Ratings and Reviews, or http://www.rating-system.com/ ? I’m trying to find something to use with a hosted shopping cart. Both of these will work, but what is missing is either email or RSS notification of new comments. Is there anything else out there?
Not sure about the rating part, but you could look at FBML for Facebook Comments that’s like one line of code to drop in a page to have it working… Sorry if this isn’t exactly what you meant but might as well try 
do you know if that can be embedded in the same way as the google ratings and reviews gadget so that it can be used on many pages, such as products in a shopping cart? I don’t know the code parts of it, but you can change the ID or something like that so that it can show the gadget on many different pages with just one set of code…
Hey Dax, not really sure how to answer your concern but I think it would be great if search for any site that does it, contact the webmaster and ask him how he did it. I hope this make sense.