MySpace are opening up a DeveloperPlatform using Google’s Open Social tools. While the BBC comment that nearly 15,000 Facebook applications have been written, and thus they expect a similar level of interest for MySpace apps (particularly given that Bebo, LinkedIn and Orkut already use Open Social, thus meaning application developers only have to develop the tool once for all sites), Josh Gadstone reports that Facebook apps may be losing popularity. Gadstone also comments that while some had hailed Open Social as a way of enabling dataportability between platforms, it’s really only widget (or, in Google speak) gadget portability.