I’ve just about finished up work on a plugin similar to
acts_as_taggable, but for comments instead which would allow you to
attach comments (possibly even a threaded discussion if conbined with
acts_as_tree) to any object. Is there anyone that would be interested
in it? I don’t want to go throug the trouble of finding some way to
distribute it unless I know that there is a demand for something along
these lines outside of my project.