You may be confused of jailbreaking Kindle Paperwhite as it's only an e-ink eReader which runs Linux. It does not have various features like the Android-based Kindle Fire. Actually jailbreaking a Kindle Paperwhite will give you much convenience. For example, you can change the wallpaper. I bet you have been tired of the original wallpaper for a long time. Wanna change it? Just jailbreak your Kindle Paperwhite first!