I'm on the verge of getting one, but one thing I want to figure out is how easy it will be to reformat the device if I want to sell it later on eBay? If I load the iPad up with pdfs, movies, apps, photos, documents, etc. How easy will it be to scrub the system clean of all of that so I can sell it to someone? I get that with iTunes you can get rid of a lot of content, but I suspect I'd be using lots of specialty apps that will transfer content over without using iTunes. So deleting files might not be as effortless as just using iTunes. So is there just some format setting that can be done to clean the whole iPad of personal content and get it back to a factory state?