Is there any advertising company that allow webmasters to decide on general ad topics (such as "Entertainment", "Autos and vehicles", "Arts", etc.) to be displayed for a user visiting on a website? I know you can choose specific ad campaigns to show to users, or let the advertising company decide for you which ads to show. But I am looking for an option to ask for the advertsing company to show me ads based on categories/topics.

Thanks.

Frank