Last modified: 2012-05-10 16:03:09 UTC
iPad at least (not sure if same interface works on iPhone and friends) supports running content on an external screen (for instance hooking up with the VGA adapter to an external monitor or projector). It would be nice to mirror the article display to the second screen, which could be handy for showing something in a classroom environment.
http://www.tricedesigns.com/2012/01/12/multi-screen-ios-apps-with-phonegap/ may help but it doesn't look like that does mirroring, but rather sets up another webview on the external screen. With no interaction for scrolling etc that might be a bit awkward.
iPad 2 and 3 mirror by default, so there's not much explicit need for this nowadays.