On one of my other blogs, a commenter asked if we use the names of visitors to the public parks we run as a cold call list to sell membership camping. The answer for my company is: Never. We never cross-sell any kind of service to our public park’s customers (except those on site). In my mind, that is one of those short-term revenue generators that long-term hurts the business. It is not even clear to me that I own the customer lists – it might be an interesting legal battle with our public partners over who owns the list, but it is one I have no intention of pursuing.