@erikvold
Why is Scriptish only for Firefox 4?
One little tidbit I didn't go over yesterday about Scriptish was why I decided not to support any version of Firefox less than 4.0, so I thought I should mention my reasons behind that decision.
The primary reason I did it was to shave a large amount of time off of the time to release tbh. Another reason was that by raising the min version of Firefox supported to 4.0 I was able to delete large amounts of legacy code, which means performance gains. The final reason was that there was a Add-on Manager API being introduced in Firefox 4 which allows Firefox extensions to easily add extension types to the add-on manager, which means Scriptish can rely on that entirely, and ditch even more legacy code, Dave Townsend (Mossop) describes how to extend the add-on manager here.