Updates to this story
Despite having its own rival video standard, it appears that Microsoft is an enthusiastic backer of HTML 5.
When Internet Exploder 9 is released. it will be the winner on HTML5 compliance, according to tests carried out by the Worldwide Web Consortium (W3C). W3C is the official organisation that develops web standards and its testing is widely seen as set in concrete.
According to W3C results Firefox 4 is just behind IE9 but Chrome 7 and Safari 5 are so far behind that they are not even in the running, This might be seen as strange as Steve Jobs has been the main champion of HTML5 as a possible replacement for Adobe Flash.
In fact, it is starting to look like IE 9 might change the fortunes of the Imperium backed browser which has been sliding slowly into obscurity behind Chrome and Firefox.
What it will mean is that web designers that use the standard can be sure that the browser can work without major compatibility problems.
Users who want to be certain that their browser will open most sites will have to choose one that best matches the standards.
However, while it is considered good that Microsoft has been backing HTML5, the question remains about the future of its Flash clone SilverLight. At the moment Microsoft seems to be backing both technologies.
Silverlight runtime requires a plug-in to work in web browsers and HTML5, is plug-in-free, and friendlier to mobile devices.
Word on the street is that there is a bit of a faction war going on within the Imperium over which standard should succeed and the Silverlight side is losing.
As time moves on the Imperium is having a harder time making Silverlight an attractive option for developers.
The Silverlight team has been on the defensive recently, with Microsoft's head of developer platforms Brad Becker saying that Silverlight does indeed have a place on the HTML5-powered web. He thinks it will be used to power rich apps like games, teleconferencing apps, and DVR-like streaming apps.