If the opportunity for the input of personal or business data (e-mail addresses, name, addresses) is given, this information is provided voluntarily. The use and payment of all offered services are permitted ? as is technically possible and reasonable - without specification of any personal data or under specification of anonymous data or an alias.

The use of published postal addresses, telephone or fax numbers and e-mail addresses for marketing purposes is prohibited; offenders sending unwanted spam messages will be punished.