Advertising networks

Most news websites earn the bulk of their money through advertising. But you don't need a sales staff to attract advertisers to your site. Ad networks can handle the sale and display of ads on your site. All you need do is drop a few lines of code into your Web pages where you want the ads to appear.

The most popular ad network for independent publishers is Google's AdSense program. AdSense is a "pay per click" (PPC) program, where you earn money each time one of your readers clicks on a Google-served ad. Since you earn money on clicks, rather than completed sales, PPC ad networks can provide a more reliable source of income for sites whose readers are not looking to make a purchase right away. Other notable PPC ad networks include the Yahoo! Publisher Network and Ad Voyager.

Most PPC ads are text, but some PPC networks also sell image and Flash ads. Ads are sold and displayed based on an auction system, where advertisers bid on selected keywords and phrases that appear on network websites. The ad network looks for webpages displaying its ad code, then matches what it determines the content of a webpage to be with the most appropriate keywords and phrases that advertisers have bid upon. The network then automatically weighs several factors in determining which ads to serve on the page, including the value of those bids; advertisers' remaining budgets for those bids; what percentage of readers have clicked on those ads in the past; and, in Google's case, the percentage of those readers who have made a purchase or read a designated number of pages on the advertiser's site.

Google's "Smart Pricing" program will adjust the amount paid to you for each click based on your readers' track record of making a purchase, or viewing a certain number of pages, on that particular advertiser's website. So if your site attracts motivated buyers, you remain in the best position to earn money.

Whatever you do, do not even think about clicking the ads on your site, or encouraging your readers to do the same. All PPC ad networks prohibit click fraud, and will boot from their program any publisher found to be inflating their number of clicks. Even well-intentioned discussion board participants can get a publisher booted from the program by encouraging other readers to click the ads to support the site. Google, for example, has suggested publishers concerned about their readers' conduct add this disclaimer to their site: