Кто кого перекликает по-серьёзному

The cost for pay per click advertising is on the rise. According to Jupiter Research, the average click price will jump from US$0.29 in 2003 to US$0.26 in 2004 and US$0.47 in 2009. And that's only the price for an average keyword. The price for the top spot on Overture.com for "data recovery" is currently US$4.30 per click. Google displays an average cost pay click of US$9,10 for that keyword. That's quite a lot for a single click. But do you get what you're paying for?
US$10 million for consumers that do not exist
Click fraud is the practice of skewing pay-per-click advertising data by generating illegitimate hits. Some statistics claim that as much as 50 percent of pay per click advertising in some competitive categories could be the product of bogus clickers.
"John Squire, vice president for product marketing for Coremetrics, which provides consulting and Web analysis for online merchants like Eddie Bauer, OfficeMax and CompUSA, estimated that the company's clients were spending about US$10 million a year on fraudulent clicks. That is, they are spending about US$10 million on consumers that do not exist."
Click fraud is done by traffic affiliate partners of PPC search engines who make a commission on paid clicks generated by their web site visitors and by competitors who want to decrease the effectiveness of your pay per click campaign.
Some of them hire human clickers or use automated programs that click the paid listings for them. More information about click fraud and the different methods can be found in these articles:
Scam tricks advertisers into paying for phantoms Click fraud: state of the industry Click fraud rises with online ad spending India's secret army of online ad 'clickers' What does this mean to you?
Pay per click advertising can be a good way to

Scam tricks advertisers into paying for phantoms
Click fraud: state of the industry
Click fraud rises with online ad spending
India's secret army of online ad 'clickers'

Вывод: больше кликнешь - больше выпьешь. За клики.