Why most of Windows Phone apps that connect with Facebook will stop working on July 5, 2012

When developing apps that connects to social networks like Facebook or Twitter, the common practice is to show the user a web control that allows him to authenticate.

To provide a better user experience, it is recommended to use the appropriate display mode:

'page' for desktop web browsers
'popup' for desktop web browsers without a page redirect
'touch' for touch devices (smartphones, tablets, etc.)
'wap' for mobile phones (deprecated)

The problem is that currently the 'touch' display mode is not supported by Facebook on Windows Phone, so it falls back on 'wap'.

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