Some company is — or at least was — selling white-box PCs with hacked versions of Leopard, under the name “OpenMac”. Love this section from their FAQ:
Can I run updates on my OpenMac?
The answer is yes and no. No because there are some updates that are decidedly non-safe. Yes because most updates are not non-safe. It’s best to check on InsanelyMac for this information but when in doubt don’t update it. You may have to reinstall your OS X if it is a non-safe update.
“Not non-safe” — that’s good.