Media
- Advertising Age - 100 Leading Media Companies
- Mediabistro - Newsfeeds, job postings, blogs, and online classes.
- MediaCentral - News for Media and Marketing Professionals
Industry Overview
- American Booksellers Association - Research & Statistics
- Book Publishing Industry News - from JobBankUSA, provides news articles on the book publishing industry
- US Business Reporter - Publishing Industry Profile
Book
Magazine
- Advertising Age Dataplace - ranking of magazines by circulation
- Advertising Age Dataplace - ranking of magazines by revenue
- International Regional Magazine Association - sites for and from magazine professionals
- Magazine Publishers of America - includes many useful facts and figures in the "Resources" section
Newspapers
- Newspaper Association of America - 2000 Facts About Newspapers: a statistical summary of the newspaper industry
Radio & Television
- Cablevision Magazine Online - click on database in the Sections column for information that includes rankings by subscribers
- Google Questions How to start an internet radio station.
