Currently Being ModeratedNov 1, 2012 4:22 PM (in response to Martin AUT)
The End User Licence Agrreement for Keynote states:
iWork Single User License. This License allows you to install and use one copy of the Apple Software (whether trial or full version) on a single Apple-labeled computer at a time. This License does not allow the Apple Software to exist on more than one computer at a time, and you may not make the Apple Software available over a network where it could be used by multiple computers at the same time. You may make one copy of the Apple Software in machine-readable form for backup purposes only; provided that the backup copy must include all copyright or other proprietary notices contained on the original.