What's the most popular gaming platform? It's not the Wii. It's not the Xbox 360. It's not the DS, or PSP. It's definitely not the PS3, and contrary to what Apple would like you to believe, it's not the iPhone. It's actually the humble web browser, thanks to the vast audience for casual browser games.
Firefox creator Mozilla is well aware of this, and is also aware of the current trend towards locking away content into smartphone apps. So the foundation has launched a push to try and persuade developers to put some of that content back onto the open web.