whats the problem? sell them, bank a profit, think of another "in" term to revolve your sites around
They are not asking to purchase it, but rather develop on it as a partnership. If they offered to purchase it I would be totally willing if the price was right. The name is HashRules.com that is getting the most requests for these "partnership" deals.
I am surprised they haven't noticed I have HashOnDelivery.com which is probably just asking for it...lol