Google has recently announced that they're removing H.264 -- the video compression open standard used by everything from iPad and iPhone to YouTube and Netflix -- from their Chrome browser. Up until now Google has been the only company to support all the major video codecs, including H.264, OGG Theora, and their own, newly open-sourced WebM. Apple supports H.264, as does Microsoft, and Firefox supports only OGG Theora.
Why the sudden change? Some might say to hurt Apple, whose iOS and iTunes depend heavily on the technology and have shown no signs of slowing down even after Google decided to stop so much partnering and start much more competing with Apple directly in the mobile OS and media services space. Others might say it's simply to give Google a competitive advantage and push adoption of their own WebM format. Neither motives are mutually exclusive but again put the advancement of standards-based web technology on the back burner -- something Google once championed. (Hey, you know it's bad when Microsoft is chiding you over lack of standards support, okay?)