"Big advertisers" refers to large companies or businesses that spend significant amounts of money on advertising their products or services. Full definition
In my view, if that pattern continues, I will only be able to conclude that the media are simply afraid of offending big advertisers like Coal and so forth. (dotearth.blogs.nytimes.com)
The storefront is also about to start consulting with big advertisers about the kinds of advertising that will appear in the digital editions it sells. (adage.com)
With newspapers watching subscription rates fall, classified ads move to the web and big advertisers disappear in a wave of retail consolidation, a fear of the web and of blogs is natural. (epolitics.com)