MSIE is still by far the biggest browser on a world scale, but segmentation adds another picture:
* In some market segments, MSIE 6.0 is still used on more than 80% of all PCs.
* Some websites have MSIE below 50% (like W3Schools or some Delphi developer sites).
Users seem to upgrade their browsers very differently. MSIE is still used in very old versions on many PCs, Firefox users are much better at upgrading, and Chrome self-upgrades automatically. As an example, this blog has this distribution for the last 30 days:
* Firefox 52%
* MSIE 18%
* Chrome 15%
* Opera 8.7%
* Safari 4.0%
However, if you divide it by major browser versions, in order to see what standards the site needs to support, it looks like this:
* Firefox 3.5 41%
* Chrome 14%
* MSIE 7 12.7%
* Opera 9 8.7%
* Firefox 3.0 6.8%
* Safari (version > 520) 4.0%
* MSIE 8 3.2%
* MSIE 6 2.5%
As you can see, Chrome climbs to second place, and MSIE 7 is on 3rd place, but with a downwards trend. As others have noted, MSIE 7 market share on a global scale started its downwards trend before the release of MSIE 8, and MSIE 8 will probably not gain enough upwards momentum to replace regain the lost territory, any time soon:
There are good reasons for the Bring Down IE 6 campaign, even though it doesn't make sense in some industries that depend heavily on IE6. But actually, one of the most important supporters should be Microsoft... as the numbers show above, the slow adoption of new versions of MSIE is a market share killer, and for Microsoft it would make sense to ask users to upgrade to MSIE 8 asap.
Many websites do not specifically support Opera, Chrome, Safari and other browsers. Maybe they should categorize their numbers differently and reconsider which browsers they should support?