When you take screenshots of your screen by pressing the power and home button at the same time, a snapshot of your screen at that particular time is saved to your Camera Roll, hence the name "screen"shot.
Usually, when you're taking a screenshot, you're taking the screenshot to show somebody something. So rather than having the screenshot just save itself into your Camera Roll and then having to go into your Camera Roll later on to share the screenshot with someone via whatever social networking means you use, a new jailbreak tweak called ScreenshotShareSheet
by iOS developer Ethan Gill will let you share the screenshot immediately after taking it.
With ScreenshotShareSheet installed, the moment that you take a screenshot of your screen, a share sheet will appear at the bottom of your screen, as shown above. The share sheet will allow you to share the screenshot that you just took via Facebook, Twitter, text message, iMessage, e-mail, or Flickr. You can also assign the screenshot to a contact, copy the screenshot to your Clipboard, or open the screenshot in a third-party application, such as Dropbox or iFile.
ScreenshotShareSheet adds a preferences pane to your Settings application where you can configure a few important options:
Here, you will be able to enable or disable the tweak on demand, as well as choose a delay period for how long you want it to take for the share sheet to show up after you take a screenshot. You can also enable or disable the "Open in" functionality if you don't have any third-party applications that you would want to open your screenshots in, and there's also an option for enabling screenshot upload to Photo Stream.
ScreenshotShareSheet is handy for just about anyone that actually takes screenshots on their device. If you want to give the tweak a try, it's available in Cydia's BigBoss repository for only 99¢.
iPhone 5 running iOS 7.0.4