If the oppertunity for the input of personal or business data (e-mail-adresses, name, adresses) is given, the input of these data takes place voluntarily. The use and payment off all offered services are permitted - if and so far technically possible and reasonable - without specification of any personal data or under specification of anonymized data or an alias. the use of published postal adresses telephone or fax numbers and e-mail-adresses for marketing purposes is prohibited offenders sending unwanted spam messages will be punished.