FWIW: Firefox 15.0.1 is the current version :-), 14 is old.
I run 15.0.1, 14 was just what came up in Google when I searched for the OS versions :)
Old... like a week? LOL
6 3% (down from 15% of MSIE a year ago-- but the holdouts are stuck* and can't be discounted)
I assume most that out of date that bad probably can't afford to upgrade and most likely won't be buying what I'm selling either. Probably not right in all cases but they're so statistically insignificant to build a business case that it's wasting more time or money to address than it's worth.