Semantic Web as Tim Berners-Lee visions it, is not going to happen overnight and assuming Google's reaction to the whole concept very recently due to the possible vulnerability of their search is surprsing that they do take this way after all.

Applications opening their data to others through a general api is the first step towards semantic web.

So where is the misuse exactly?

I didn't describe OpenSocial as the Semantic Web. W3C XForms were beaten thanks to the workaround of AJAX applications. which are not even supported in IE7.

Obviously the Web is not commercially mature to grasp Semantic Web in its whole.