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Banner Ads Basics
Digital Texas Banner Ads
Understanding Banner Advertising
We are in a period when banner advertising seems to be on the wane. You know, those rectangular, flashing boxes at the top of webpages on commercial sites. Click-through rates have dipped to 0.39% average and the industry magazines regularly carries articles discussing the death of banner ads. But while banner ads aren't as effective as they once were, the truth is that a great many companies, large and small, still use banner ads as part of their advertising mix and will continue to do so. Nevertheless, advertisers are becoming more sophisticated about when and how to use banner ads.
Defining Terms
To explore this broad and evolving type of advertising we need to begin by defining some terms:
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Hits
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Page impressions or page views
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Banner views
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CPM
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Banner ad
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Creative
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Click
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Click Throughs
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Click Through Rate (CTR)
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Conversion Rate
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Cookies
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Run of Site (ROS)
-- A fuzzy term meaning the number of times a webserver has been "hit" by a request for a webpage or a graphic image. Since perhaps 5 out 6 "hits" are for graphic images, the number of "hits" can be grossly misleading. Usually people mean by "hits" the number of times a webpage has been seen, but to be precise, the better term is "page views" or "page impressions." -- Refers to the number of times a webpage has been requested by the server. -- Refers to the number of times a banner has been viewed. Almost the same as "page views," but some banner server programs don't count the banner view unless the visitor stays on the page long enough for the banner to be fully downloaded from the banner server. -- A metric from the print days of advertising, meaning "Cost Per Thousand," using the Roman numeral "M" to stand for one thousand. A price of $15 CPM means, $15 for every thousand times a banner is displayed. -- An ad graphic hyperlinked to the URL of the advertiser. These are usually animated GIF images, though we are seeing an increasing number of MacroMedia Flash banners. The full banner size is 468 x 60 pixels, and most sites limit the file size of the graphic to 12K to 16K. The Internet Advertising Bureau (IAB) specifies eight different "standard" banner sizes. http://www.iab.net/iab_banner_standards/bannersource.html -- "Ad-speak" for the actual banner graphic. -- When a visitor clicks her mouse on a banner ad, she is transferred to the advertiser's site. The number of responses to a banner ad is sometimes refereed to as the number of "clicks." -- Same as "click," commonly used to count the number of visitors who click on the banner and are transferred to the advertiser's site. -- The percentage of click throughs to banner views. A 1% CTR means that 1% of each 1000 banner views (or 10 visitors) have clicked through. -- The percentage of shoppers in an online store who actually make a purchase. This is typically 1% to 5% in online stores, but can be lower or higher. -- Small files written to your computer when you view a banner ad, visit a website, or put a product in a shopping cart. This helps the banner server to keep from showing you the same ad, or perhaps show you ads you might be more interested in seeing. Cookies are controversial, but are here to stay; too much of the Web is run by cookies to get rid of them. Cookies also allow an advertiser to track which banner ad a visitor saw that brought him to the advertiser's site, and which banner ads resulted in actual sales. -- Refers to displaying a banner ad throughout a website or a banner network with no targeting by keyword or site category. Run of site advertising costs substantially less than more targeted advertising.
How Do You Measure Success?
You'd think that success would be easy to measure, but advertising has never been a simple art. Ad agencies have their unique self-serving spin, advertisers set their own objectives, and banner ad designers see something else again. Here are some of the factors involved:
Click Through Rate (CTR)
Cost Per Sale
Branding
CPM Banner Economics
While brand marketers may assess effectiveness in some fuzzy way, direct marketers look at any advertising method in terms of how many sales it produces immediately. Let me give you an idea of how the numbers might look for banner ads. Your results will vary, depending upon where you advertise and the effectiveness of your creative. Here are some arbitrary numbers to use in our calculation:
Cost per Visitor = CPM / 1000 * CTR = $10 / 1000 * .005 = $2
In our example, the $10 you spent to show the banner ad to 1000 people netted you 0.5% or 5 visitors to your site. Each visitor cost you $2 to get there. Hmmm. Not inexpensive. But now let's calculate what your advertising cost is per sale.
Cost per Sale = Cost per Visitor / Conversion Rate = $2.00 / .02 = $100
Oops! You mean it costs me $100 to get one sale? Yes, Virginia. Of course, if you have a 10% conversion rate rather than a 2% conversion rate, it only costs you $20 to get a sale.
Lower Cost Approaches
What this all means is that banner advertising on a CPM basis can be expensive. If you have a compelling banner that 5% to 10% of the viewers click on, that can change the economics. If the price you pay for banner ads drops to $3 CPM, that can help, too. If you can pay a modest cost per click through, that would make a huge difference in the cost per sale. If you can pay a commission of 5% to 15% only when a sale is made, affiliate programs begin to look more and more attractive. But no matter which approach you use to pay for advertising, developing and placing 468 x 60 pixel banner ads is likely to be part of your advertising mix. test
. While CTR and cost per sale relate to direct marketing objectives, another way of looking at banner ads is as "branding" tools. They create brand awareness, and a brand image in the viewer's mind, whether or not the viewer clicks on the ad. But hopefully, when the viewer gets ready to make a purchase, those "impressions" (a wonderful ad agency buzz word!) will cause you to select Coca Cola over Pepsi, or Barnes and Noble over Amazon, or JCrew over Lands' End. Branding is very difficult to measure, but can be very powerful. Typically, only
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