[zweben]

I agree. Native apps are great if you have some features you want to implement that aren't practical in a web app, but I can't think of any case where a website with a native app for mobile devices has any good excuse not to also have a web app to fall back on.

[webdragon]

With things like games, you can see that an app could be the only option. While HTML5 is almost there, it still doesn't offer the performance and capabilities of a native app, while Apple's stance on Flash means Flash-based games are a no-no.