Woz is absolutely right. The real problem with cloud is stewardship. Hypothetically, let us assume the advertisement model fails for Google, what will i need to pay for my cloud apps ($20/month or $200/month). What if Facebook changes hand and run by Kuwait Oil Barons? What if the cloud service provider sold to my arch competitor?
After seeing the TWiT.TV show about Roll your Personal Cloud (http://twit.tv/show/know-how/1) I have started using Tonido (http://www.tonido.com) for my remote access and sync needs. It can be run completely local and authentication is between my browser and the Tonido device. I am happy sofar and completely own my data.