This is the concern. I have seen first hand banks using the "customer lists" for their own personal benefit, or the benefit of a family member or friend in the same business. On a similar note, also seen business plans turned down by banks only to have the very same business opened by bank bigwigs or family/friends. This, after the person applying for the loan was told the idea wouldn't work in our small community, AND after they had done all the market research, etc for the indepth business plan that the bank required! If the information was ONLY being used for the purpose intended, I wouldn't mind handing over a customer list. However, in a small town like what I live in, I couldn't afford to lose my customer base.