Can OS X Lion be shared between computers

I think you can if you use the same apple id for each computer.

Yes using the same apple id wich one you buy the first time you can install Lion in app to five authorized computers,is mac app store rules from apple.

No mention of 5 being a limit:

Taken from the App License Agreement in the Mac App Store on the Lion Page.

Regards,

Colin R.

Well done Colin, you are the first person I have ever met who has read the license agreement. I never realised it was in english (sort of) :-))