Rated 5 out of 5 stars
a good idea "Operator lets you combine pieces of information on Web sites with applications in ways that are useful. For instance, Flickr + Google Maps, Upcoming + Google Calendar, Yahoo! Local + your address book, and many more possibilities and permutations."
brought into my mind the the idea of "borrowing" already running applications results from wwweb and bringing them into virtual operating systems and from there to our terminals ..
unfortunately after the installation i discovered a GREY (turned off) status bar button and a a similar toolbar ... perhaps not installed when using some personas or without repeated restart
and no manual guide "click and discover" for how to make your add on useful to anyone who doesn't know "how to"
is very possible that your add on doesn't work anymore
however for its huge potential is on my list of great add ons for Firefox