I’ve spent the last few days keeping track of the seemingly endless stream of news and blog coverage about Google’s new OpenSocial model for social networking applications . … In the Web 2.0 era (and in all computing eras before), the central truism is that a platform beats an application every time. This applies here with a vengeance and MySpace and other social networking sites have suddenly rushed to embrace openness and 3rd party widgets and gadgets to such an extent …