This is one of those add-ons you don't get to make use of as often as, say, Ad- Block or Tab Mix Plus, one that you might think twice about installing.

But unless you've experienced the sort of self-congratulatory slap on the back for having installed it when indeed it gets to resurrect a page you would otherwise never get to see, you might not understand how indispensable 'Resurrect This Page' really is when you need it most.