Whoa! This unusual (and risk-free) hack can free up hundreds of megabytes, or maybe even a couple gigabytes. It seems like iPhone storage is always at a premium, especially if you have an entry-level model with just 16GB -- an economic necessity for many an iPhone owner. It's the rare person who doesn't know the pain of trying to download a new app or snap a few more photos and seeing the dreaded "not enough storage" message. Click here for the full story.