Backgrounder puts an icon on the Springboard.
Click the icon
Click Global and switch "Backgrounding Persists" and Badge to ON
Click Back
Click Control
Under Home Button menu, put a check mark to Short Hold
Close
To test Backgrounder, open up e.g. Cydia and press Home Button for like 1 second. Cydia will revert to the background and will have a small mark on it's icon - telling you it IS "backgrounded"