You're working under the assumption that because something hasn't happened in your particular case it won't happen in other cases. Your also assuming that multiple activations of the same key from different locations is the only reason Microsoft blacklists and the only way they know whether to blacklist. The fact is, we don't know how they know. Additionally, demonofelru isn't asserting that because a key was blacklisted for him in a particular case it will be blacklisted for you in your case. Rather, he's claiming that there exists a risk to your customers that the keys they buy could be blacklisted. That claim strikes me as just obviously true, and I don't see how you can reasonably deny it.
the reason why i "deny" it, is simply because he's the first and only person i hear of that ever got a windows key blacklisted, and i do know some people who make money by selling one and the same key to a lot of people and never having problems with their key being blacklisted and/or their account being shut down.
Look, here are the facts. Microsoft
can blacklist those keys if they want to. Your act of selling them
is a violation of the TOS you agreed to when you became a TechNet/MSDN subscriber. If they find out about it somehow, and we don't know all the ways that they can (posting about it on a public forum probably doesn't help you), they can blacklist those keys and terminate your TechNet/MSDN subscription. Why? Again, because that's what you agreed to when you got a Technet/MSDN account. Because you are violating the TOS between you and Microsoft, and because they can blacklist and terminate your account because of such violation, there exists some risk to your customers. You simply cannot guarantee that there is no risk. Maybe it'll never happen. But, that fact, that it never happens (if it should be a fact), does not entail that there is or was never any risk to your customers.
Maybe things will turn out fine for you, and, as demonofelru said, maybe the risk is worth it to you and your customers, but there still exists a certain measure of risk.
