Very simple idea that work well. Unfortunately it works too well--I want to be able to put it on a schedule (working hours) or have a button to easily disable it after hours, without going into the Firefox config. I understand that for some people, being easy to disable is a problem. But that should be configurable.

Very usefull add-on.
I rate it only 4 stars because it could be upgraded i think . Should it be possible to show the delay time when you open an delayed page ? That should be useful, thanks