It's a little strange to get used, but when you do, browsing is so much more comfortable. Check under the "Extras" tab when you open the Gesturfy settings page to turn on mousewheel tab switching. It makes moving through my 50 tabs much less annoying. I have changed the color of the line it draws to match my firefox theme.

And I would love to see an optional command "simmulate key press" because another extension I use, Sideberry, can be opened and closed by pressing F1.

In my opinion, there is only one fault with this. Limited visual customisation of the line drawn, and perhaps some font options in the gesture description box, heck maybe some box styles too. Glowing effects, some really simple particle effects etc.

But that is a very subjective issue, and really enjoy using it.

Thanks Gesturfy!!