通过Web Services与MS Dynamics进行电子商务webapp集成（Navision 2009）

Has anyone tried to build an e-commerce site atop MS Dynamics, using the new Web Services introduced in Nav 2009 ? I'd like to know what kind of load these web services can take, and what kind of resources can be read/written, and any other challenges that I can expect.Has anyone tried to build an e-commerce site at