JellyBean with multiple users

If you have a rooted Android phone running Jelly Bean, then you can have multiple users, just like on a regular Linux machine. :)
If you want to add a user then open terminal emulator and type:

1. su
2. pm create-user foo

Press and hold the power button and you'll be able to select your newly created user.

If you want to list all users on the system then open terminal emulator and tpe:

1. su
2. pm list-users

If you want to remove a user then open terminal emulator and type:

1. su
2. pm list-users and remember the number before user foo
3. pm remove-user 1

pm list-users gives something like:

Users: 

                UserInfo{0:Primary:3}

                UserInfo{1:foo:3}