Well it's the same thing as, can you share an install disk with your whole town? Yes you can, no Apple will not like you if you do, although there's no way to enforce it through the OS. The family license is for 5 computers in the same house and FAMILY not supposed to be your neighbours unless you live beside your parents then it's not really a big deal IMO.
Don't give Apple any reason to implement copy protection schemes. Don't be cheap and just buy the correct license if you want Leopard.
Don't give Apple any reason to implement copy protection schemes. Don't be cheap and just buy the correct license if you want Leopard.