I know Opera had them. However this post is about FF4 beta and not Opera. FF4 beta1 did not let you put tabs on the top in OSX so I mentioned that is a welcome

I know Opera had them. However this post is about FF4 beta and not Opera. FF4 beta1 did not let you put tabs on the top in OSX so I mentioned that is a welcome change. I made no attempt to justify who got what, when and from who.