A toggle has recently been released in Cydia and Installer called KeyVib. This toggle makes your iPhone vibrate whenever you type. By tapping on the icon, you enable it/disable it. You then restart your phone to see the changes. » Cydia/Installer: KeyVib

asVibra 0.1 is a new little app from Andre Sendowski. The app modifies your iPhone so it will vibrate longer when you receive a sms. The app does exactly the same as my old post (make your iPhone vibrate longer), it extends the vibrating of your iPhone when receiving a new txt message.
» asVibra 0.1 and asVibra2 0.1 - Extend the SMS alert vibration