Monitors advertising expenditure information for millions of product brands across television, radio, magazine, newspaper, internet and outdoor channels. Search by category, company name, subsidiary or brand. Spenders can be ranked by category, company name, brand and more.

Maintained by Prof. Govani at Babson College, this guide has several useful links including Media: Kits-rates-ratings broken down by media type.

A wealth of information including reports, data, and analysis under Markets and Stations, Media Comparisons (includes all types of media including social media), Research, Industry Trends, and Political (covers political ad spending and presidential campaigns).

Provides downloadable profiles of cable networks that include data on viewership demographics and lifestyle. Network profiles can also be browsed by multicultural groups, demographics, sports categories, gender, and programming.

Check the blog and resources links to find articles, book chapters, videos, and slides on various aspect of word of mouth marketing.