Oh my God yes! The most annoying thing about Firefox is closing the windows in the wrong order and losing your pinned tabs. A totally ridiculous way of using them. This solves the problem instantly. How can I send you some money?

Easy to use and works! Should be how pinned tabs work in Firefox. I pin a tab and it stays pinned, even on start up and in new windows!

Simple and effective - exactly what I was looking for!