now some apps grab keys from the browser like "control-F" won't give me a native search modal dialog - instead providing their own search widget. Things like this break experience of the web for me. Combine that with tridactyl which i prefer to use to navigate around and it's even worse.
My addon list isnt that big either... it's just that I disable a lot of things as well, like webGL and other stuff. Suprising number of sites needlessly use these things.