I fail to understand why work on this API has been suspended. HTML5, JavaScript and CSS together are becoming a natural platform of choice on which to write portable applications. Indeed, I have just started work on just such a project, welcoming the chance it gives to break away from proprietary solutions.
An essential part of any mature application is the ability to share data with other applications. As an example, JSON provides an ideal way to do this: but to be useful, it has to be possible to save a JSON file on a local system (internet access cannot, and should not, be taken for granted) which can be transmitted by email or other simple means.
