Darn... Rated 5 out of 5 stars
I tried to modify the .RDF and installed it, but it no longer functions at all. I'll really miss this one, it was very useful.
The developer's code is all pretty well documented throughout, but I just don't know enough about Firefox's internals to effect the necessary modifications. Someone who's well versed in Firefox's code, should be able to make quick work of it though.