Rated 5 out of 5 stars
Very good exstension. I was looking for a mouse gestures extension for FF3 (all-in-one-gestures is not compatible), I found this extension and I replaced all-in one gestures even in my FF2 installations.
About timeout, it is easy settable in about:config (I use 350ms), but obviously it's desirable to see the setting in the options panel.
I've not the problem of the last tab hinted down here.
A useful feature for me is the chance to set leftclick+scroll instead than rightclick+scroll (I already use it with another estension). Five stars.