Ajaxful Rating generates a rating system with a useful helper to allow you display and submit rates for a model with a dash of Ajax in your views.
An updated version of the plugin is available at http://github.com/edgarjs/ajaxful-rating along with more detailed installation instructions, tips and tricks.
Author: Edgar J. Suarez
Installation:
ruby script/plugin install git://github.com/edgarjs/ajaxful-rating.git