@tomw a debate that has beem going on close to the time the web first existed (perhaps before it) we never called it "corporate social" though we called it "commercialization". People using the internet not as a model for global communication and the sharing of ideas but as a marketing tool to promote oneself and ones brand.
@geekwisdom True but I would make a distinction between a commercial site describing or even directly selling products – which is at least still on the web – and services that create closed systems walled off from the web