On the 22nd of june i got an iMac and i was told iwas able to upgrade to lion for free when it was released. I was also told that it could be installed for free on multiple computers. I am about to sell my old MBP and was thinking of putting lion on there for free before i sell it. I was told i can put it on all my computers for free if i sign in with the iTunes address that i redeemed the code on but what if i sign in with my iTunes on the MBP download lion and when i sell it they use there iTunes account? does that matter?