Most of the worldwide telecommunications laws and regulations require that websites that are not used strictly privately or personally must have a legal notice. This includes websites that contain a blog or texts of a journalistic nature.
The name of the contact person responsible for the content must be mentioned in the imprint, along with an address and a means of contacting this person. It may be that other statutory information must be included in your imprint. Consult an expert to find out what specific information is required for your site.