They don't have links that open a page in Safari. They have http:// http:// URIs, which happens to invoke Safari as the registered handler on every iPhone. Th

They don't have links that open a page in Safari. They have http:// http:// URIs, which happens to invoke Safari as the registered handler on every iPhone. There's no reason (other than Apple policy) why that URI handler couldn't be registered as Opera or Firefox. That's how it works on other platforms. Even on the iPhone developers can register most URIs (e.g. myuri://) to start up their own apps as long as it isn't a protected one, unless they changed that recently.