Good Rated 5 out of 5 stars

Does exactly what it says it does. Only annoying thing, and this is a Firefox issue not the extension, is that you cannot have just a private tab or say a new instance of Firefox running in private browsing so you can keep your other tabs open at the same time. Could do with explaining this behaviour in the description so people don't wonder what is happening when they first use it.

This review is for a previous version of the add-on (0.1). 

Thanks! I'll see if I can point this caveat out in the description!