Why is it that Apple just cannot get iCloud working right? It should be simple. Documents and Data should be your documents and data. Period. It is not! It is only iWork's data. Seriously? MS Skydrive is now the default for Windows 8.1 and I believe that Apple should get that. Also your Messages do not sync across machines. How hard is it to sync? Every time I set up a new profile I have to copy my /Library/Messages folder over or it just starts blank. Simple concepts that I think would improve Mavericks.