What is the mysterious ‘other’ storage that’s clogging up your iPhone?

Have you ever looked at your iPhone's storage and noticed that a sizable chunk of it is taken up by a mysterious block that's only labelled 'other'?  Christian Zibreg of  iDownloadBlog  has and he recently went on a quest to discover once and for all the contents of the "other" storage that you have on your iPhone and iPad. FROM EARLIER:  This app lets you play N64, PS1 and GBA games on your iPhone without a jailbreak According to Apple , your iOS device's "other" storag