If there is the possibility of entering personal or business data (emails, names, addresses) on the website, the input of these data takes place voluntarily. The use and payment of all offered services is permitted - as far as technically possible and reasonable - without specification of such data or under specification of anonymized data or a pseudonym. The use of the contact details published in the imprint or comparable information such as postal addresses, telephone and fax numbers and email addresses by third parties to send information that has not been expressly requested is not permitted. We expressly reserve the right to take legal steps against the senders of so-called spam mails in violation of this prohibition.