If there is a possibility of entering personal or business data (e-mail addresses, names, addresses) within the Internet offer, these data are disclosed by the user on an expressly voluntary basis. Where technically possible and reasonable, the utilisation and payment of all services offered is also permitted without providing such data resp. by submitting anonymized data or by using a pseudonym. Use by third parties of contact data like postal addresses, telephone and fax numbers published within the framework of the imprint or comparable data as well as e-mail addresses for the forwarding of not expressly requested information is not allowed. Legal measures against the senders of so-called spam mail in the event of a violation of this ban are expressly reserved.