I stopped using Firefox as my default browser as it does not support sandboxing and protected mode browsing (low privilege process). I am not a big time plug in user but a normal surf web type. But as I do transect a lot online and security is a big criteria.
Not sure why they are not implementing it. (even IE has it from IE7 IIRC).
Yeah, but Wikipedia is 7th most visited site on internet. so it gives idea of "real world" usage but agreed, One site's data would be too skewed to extrapolate.