Network Advertising Initiative allows you to opt out of allowing ad networks to monitor your browsing habits to tailor your ad viewing experience. However, it’s a double edged sword because ad networks support the websites and products you care about, including this one.
Most content on the Internet - from the latest political news to up-to-the-minute sports scores and stock quotes - is free to consumers. Why? Because of effective Internet advertising.

Advertising supports most of the free content people enjoy viewing online. Allowing cookies and online advertising to personalize services to your browser can be a great benefit to the websites you support, by helping them earn revenue, and to you by helping ensure that you don’t see too much repetition or irrelevant advertising while you surf the web.
What makes Internet advertising effective is the use of technologies that allow advertising networks, analytics firms, websites, and others to make inferences about consumer tastes and provide relevant content. Because of the seemingly complex nature of these technologies, many users have become concerned about their online privacy.
Recognizing these concerns, the NAI–an association of advertising networks, data exchanges, and marketing analytics services providers–has made consumer education a top priority.