A blog that is created by an ad agency to enhance the public relations of a company.  Also called a "proxy blog" or "pseudo blog," readers often tire of such content unless the writers are extremely knowledgeable and informative.  Ghost blogs may also be published under the name of a sponsoring company that supplies the content but are written by a third party with more proficient writing skills.  See 
broadcast blog, 
blog and 
Ghost platform.