The Mobile Applications folder on my Mac takes up 6 GB of hard disk space. Bear in mind, we have a lot of iDevices in my family, all using the same iTunes account. But I don't need to keep them stored on my Mac hard disk, do I? What's the best way to delete them, particularly if I want to keep them on an iDevice? Can I avoid this backup altogether, since the apps I purchase are always available in the Cloud anyway? Thanks!