Mercantiquo is a digital marketplace for old or rare books. Owners can insert their book data in Mercantiquo for free, after registration. Mercantiquo handles customers' personal data in observance of Italian privacy law 675/96 regarding the sending of promotional material. This data may be given to third parties engaged in marketing work with Mercantiquo. On request and at any time, customers may change their data, cancel it or forbid its use for marketing purposes.