Why don't these graphs ever break down into the major versions of Firefox? I know there is still testing done on 1.5, 2.x and then of course 3.x as the current version. Why break down IE, Opera and Netscape but not Firefox or Safari?
Note that this is from w3schools.com, not w3.org (a completely different site). This is for a web developer audience, so it kind of makes sense; from a developer point of view there are much bigger differences in standards compliance between IE versions than between Firefox versions. But mostly they just seem to want to keep a small number of columns on that page.