A feature which a lot of iPad owners have requested in the past is the ability to have multiple user accounts. This would enable multiple people to have individual personal accounts so passwords and other history is not shared with other people who may use the iPad.
iUsers enables this feature of having multiple accounts but you will need to jailbreak. If you have jailbroken your iPad add http://cydia.iblogeek.com as a repository in your Cydia settings, then search for iUsers.
The video below shows how it works and the Pirates of the Carribean theme tune really does add some drama.