Many fans of cloud services are used to sharing secure files with their friends, but that surprisingly hasn't been an option for iWork users -- at least, until today. Apple has updated both iWork for iCloud and all its Keynote apps to let productivity mavens share password-protected documents through iCloud links. Appropriately, iCloud now offers a list view that helps you find shared documents. Whether or not you're the sharing kind, we'd suggest at least grabbing the Keynote update; both iOS and Mac users get better presenter display options, new transitions and more sophisticated charts. You'll find all the iWork upgrades at the source links.