I keep running out of storage space /available memory when I want to add a new app. Certain apps, particularly Facebook, Google+, Pinterest, Tumblr etc. just keep growing as they are used until there is no free space left. Only way to get the space back seems to be to delete the app and reinstall. Surely there is a better way? Is there no way to tell these apps to limit themselves? Even Evernote, the free version which does NOT keep a copy of pages on my iPad, keeps ballooning. Any clues?.