Which Ad Network is the Best?

Ward Andrews recently asked me which ad networks are the best to maximize revenues for website publishers. The following blog entry is a modified version of my email to him.

First, selecting the best ad network often depends on the niche of your site. For example, if you have developed a classic cars site that caters to men, Gorilla Nation (which focuses on selling ads for men’s websites), might be a great place to start. I’ve heard of niche ad networks for health, dating, travel, blogs, women’s websites, financial services, social networks, mobile devices, etc. Search engine ad networks (such as Google Adsense, Yahoo Publisher Network and Microsoft adCenter) provide targeted advertising generally related to the content of the page. Targeted ads generally sell for a lot more than untargeted ads, and it can be difficult to break into new niches, so finding an ad network that is already selling ads targeted in your niche is very important.

Second, it is important to select a larger ad network if you can find one that sells ads in your niche. Many of the larger advertisers and advertising agencies will not work with the small ad networks which deliver much less reach and return for their effort. The following chart (Source: ClickZ and ComScore) shows the largest ad networks in order of unique visitors as of January 2008. Comparing the number of visitors using each ad platform is one good indicator of the quality of the ad network, just as the number of people in restaurants can be a good indicator of the quality of the restaurants.

U.S. Ad Focus Ranking by Unique Visitor, January 2008
Rank Property Unique Visitors (000) Reach (%) Rank Property Unique Visitors (000) Reach (%)
Total Internet users 184,239 100
1 Platform-A** 166,763 91 26 Vibrant Media** 75,953 41
2 Advertising.com** 163,837 89 27 CPX Interactive** 71,667 39
3 Yahoo network** 155,822 85 28 MySpace.com* 68,641 37
4 Google Ad Network** 143,200 78 29 eBay 66,861 36
5 Specific Media** 142,290 77 30 Gorilla Nation Media 65,282 35
6 ValueClick networks** 137,548 75 31 YouTube 61,375 33
7 Yahoo 136,243 74 32 Undertone Networks** 59,273 32
8 Tribal Fusion** 131,840 72 33 MSN home page 58,548 32
9 Google 126,569 69 34 Ask Network 52,102 28
10 Casale Media Network** 121,893 66 35 PrecisionClick** 51,156 28
11 AOL Media Network 109,442 59 36 Kontera** 50,481 27
12 Windows Live 103,424 56 37 Amazon.com 48,324 26
13 DRIVEpm** 102,085 55 38 Business.com network 48,181 26
14 Adconion media group** 98,378 53 39 AdDynamix.com** 46,625 25
15 Yahoo home page 95,460 52 40 MapQuest 44,537 24
16 Traffic Marketplace** 95,254 52 41 Turn Inc.** 42,103 23
17 Tremor Media 93,929 51 42 YuMe 41,666 23
18 AOL 91,005 49 43 About.com 41,487 23
19 24/7 Real Media** 90,483 49 44 eBay home page 39,169 21
20 ADSDAQ by ContextWeb** 88,984 48 45 Vizi Media** 38,066 21
21 BurstMedia** 88,097 48 46 IAC AS network 37,526 20
22 AdBrite** 85,308 46 47 Nabbr 36,643 20
23 Collective Media** 79,832 43 48 Facebook 33,861 18
24 interCLICK** 79,369 43 49 Weather.com 31,464 17
25 Centro 78,460 43 50 CNN 29,157 16
Notes
1. Reach denotes the percentage of the total Internet population that viewed a particular entity at least once in January.
2. * means the entity has assigned some portion of traffic to other syndicated entities.
3. ** denotes an advertising network.
Source: comScore, 2008

Platform-A is owned by AOL and has just debuted in the #1 spot, as it merges the advertising from all of the AOL properties, lead by Advertising.com. AOL has spent nearly a billion dollars purchasing companies to create Platform-A, such as Lightningcast (online video ads provider which AOL purchased for $100 million), Third Screen Media (mobile ads provider which AOL purchased for $105 million), AdTech (ad serving service which AOL purchased for an undisclosed price), Tacoda (behavioral targeting service which AOL purchased for $247 million), Quigo (search engine marketing and contextual advertising provider which AOL purchased for $347 million), Perifilliate (CPA marketing service which AOL purchased for $125 million). Platform-A has the potential to be something amazing and is something that should be watched closely. However, Platform A has not yet lived up to its potential and has not yet created an ad network sufficiently compelling to lure me to use their services.

Third, the growth trends of the major ad networks is another key indicator of the future quality of the ad network and the culture of innovation within that organization. Growth rate is one of the best indicators of the future growth of of the ad network. The chart below (Source: eMarketer) shows the growth rates of leading ad networks. According to this chart, Google’s projected growth rate for this year of more than 30% and its historic growth rate far surpasses any of the competitors.

Fourth, it is important to determine the advertising behavior of the visitors to your website. For example, if you have a blog, forums or social networking site, which has a large percentage of repeat visitors, it might be more effective to use a CPM (cost per thousand ads displayed) model. The same would be true if advertisers are not willing to bid a lot for the keywords related to the topic of your site (such as a site for fans of your favorite sports team). However, if the content of your site is primarily about topics for which advertisers would bid higher amounts to reach (mortgage, cars, etc.), or if your website attracts a large percentage of new visitors, then a CPC (cost per click) model would often be more effective.

One of the first questions you should probably ask is whether your site can generate more revenue in a CPM or CPC model. As a general rule, CPM advertising with ad networks will generally pay about $3 to $4 for every 1000 times an ad is displayed on your website, but this can vary substantially.

If a large percentage of your traffic is from visitors outside the United States, this can also be a red flag for some of the ad networks. Also, if the URL of your website contains keywords not related to the topic of your site, that can cause confusion for the contextually targeted ad networks and result in untargeted advertising.

Fifth, it is important to provide variety of ads on your website. It is generally better to rotate several different ad networks so that a wider variety of advertisements and ad formats are displayed on your website. If you select Google Adsense, you should enable the graphical ads from third-party ad networks to help provide this variety. You do this by opting in to image ads, enabling advertisers to target your Adsense channels, and then opting in to placement targeting.You can also use the Google Ad Manager to rotate in multiple ad networks and select the one providing the highest return. This variety can often increase the click-through rates and revenue earned. This variety will also help you to better determine which ad networks should receive more or less of your available ad inventory.

In addition to Google Adsense you may want to experiment with some of the following ad networks to see which combination works best for your niche site:

The number of ad networks on this list seems almost unmanageable. However, select the ones that make the most sense for your site, then use PubMatic. PubMatic is an amazing free service which rotates the ads from different ad networks on your website, testing the ads from each ad network in each ad position, and automatically displaying the ads that perform the best on your website.

If your site is large enough to hire an in-house ad sales team, you can probably generate more income from your advertising inventory than these ad networks, but until then, these competing ad networks provide great solutions to help smaller websites increase revenues.

Which ad networks have you used and which have or have not worked well for you?

One Response to “Which Ad Network is the Best?”

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