Wednesday, February 13, 2008

Hover Ads: When statistics hurt.

Bob just loaded a web page, but he can not access the content yet. A large flashy ad appeared in the middle of the screen and offers discounted MP3 download, there is no obvious way to close it. Bob scrolls the page, but the banner remains in the middle. Bob minimizes the window and restores it, but nothing happens. After a dozen of seconds a small red cross appears in the corner, but clicking it changes nothing. At the end, out of desperation, Bob clicks in the middle of the intruder and the advertised site appears in the new tab. He quickly closes the new tab and looks at the original page. The banner is gone. After a several minutes he navigates to the next page. He clicks on the hover ad there without even reading it and quickly closes the newly opened page.

Not everything is so smooth. Alice just loaded a web page and she is already very angry. The banner in the middle of the screen says “Smart way to exploit Forex! Enlarge your budget!” There are two buttons there as well, one says “Show it to me!” and the second reads “No, I’m not smart enough.” At the end she clicks the second button, and feels frustrated. Next time she looks at the ad briefly, clicks the first button and closes the new window instantly.

In all such cases the banner is impossible to ignore and click closes it. Furthermore it is easier to click it, than to close it without opening the advertised site. The exact mechanism can vary, "close" button can take long to appear, it may be broken or contain humiliating text.

Such ads are widespread now, the abundance depends on language and region, but you can see hover ads in every language used on the web.

Below is the explanation of what just happened.

Mike is a publicity manager in a small, but very ambitious firm. Today his boss told him “Our web-site, realgreatcarsforfun.com (RGCFF), needs more visitors. You must do something about this!” Mike spent 6 hours reading about online advertising. He now knows about Click Through Rate (CTR), Pay Per Click (PPC), Cost Per Thousand (CPT) and much more. His head is full of Three Letter Acronyms (TLA) including “WTF”.

On the next day he starts comparing offers from advertising networks. The networks’ sites provide information on CTR, PPC, CPT and WTF of average ad in each of the numerous advertising plans offered. Some advertising networks will even design a banner for his firm if firm does not have one already. And all of them promise “best value for your money”.

Mike’s time is limited. He needs to make a motivated choice and report to his boss. At the end he picks a very special offer from doreallyclicknow.com (DRCN). The offer features incredibly large CTR and low CPT. He also checks the information on how it works; ads hover over the publisher’s page making them hard to ignore thus leading to higher response rate. DRCN will even design a free banner for a new advertiser.

Mike’s boss approves. A new banner with a stylish car and almost naked girl comes out of the void. The webmaster of RGCFF observes increase in the number of visitors. Everyone is happy.

After some time boss finds, that the number of page views per visitor declines rapidly. He is not alarmed yet, “at least they all note our nice title page”, he thinks. Only when the sales start to decline RGCFF employees start to suspect something.

Economists call it “market with asymmetric information”. For RGCFF clicks from all advertising plans are the same and their publicity manager picks the cheapest clicks. DRCN knows that clicks generated by overly-intrusive hover-ads are rotten. If advertisers could not evaluate the quality of incoming clicks the entire market would become rotten as all ad nets would switch to selling cheap irrelevant clicks to stay competitive. Fortunately it is possible to measure the effect of advertising, at least approximately. Mike did not read the report on annoying ads by Bunnyfoot Universality which says that at least 90% of clicks RGCFF pays for do not bring potential customers.

Now look at the situation from publisher’s (owner of the web-site that shows the ads) and user’s perspective.

Mary is the owner of best-baby-meal.com (BBM) a very popular web-forum about breastfeeding. She wants to earn money by showing ads to the visitors. The number of visitors is finite, so is the number of page views, so is the number of ads that can be placed on every page. She must choose. Now Mary thinks, “no matter how bad the ad is people will not leave just to avoid the banner”. In her eyes price elasticity of demand is perfectly inelastic. She finds a very tempting offer from DRCN – hover ad. It appears in the middle of the page and seems quite annoying, but there is no problem, users can just close it. Also users will click it more and each click generates some money. Mary enjoys the income and prefers to ignore the thread asking for removal of annoying pop-ups. Only when a group of forum-veterans boycotts BBM and goes to young-mothers-forum.com (YMF), her competitor, she feels that there is something that needs to be changed. Her model of user behavior was wrong.

Now look at the end users. They are the real creators of the goods traded in the online advertising market – clicks. Some of them click by mistake; many of them click ads out of curiosity; some clicks still bring potential customers to the advertised resource. There is a finite capacity of the market; if someone produces clicks out of the void it is already suspicious. One tomato can be processed to one bottle of ketchup, but you can make 3 bottles of ketchup with a single tomato if you try hard, it depends on the amount of starch. You can increase click rate by proper targeting, by making sure that people see only relevant ads. But some will do it the easy way: by using hover-ads – the starch of online advertising industry.

What is the root cause of the problem? It is caused by advertisers who create the demand for rotten clicks. They do not handle statistics correctly and rely too much on CPT, CTR and other indicators of doubtful value. CPT and CTR are important, but you must know to use them properly. Otherwise statistics will hurt.

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