We want to emphasize that there are lots of authentic sites serving genuine content. But unfortunately the existence of these people (as discussed above) reduces the ROI of many advertisers to the extent that they rethink their interest in PPC. In the word of one of our organic SEO customers, with PPC “you always get a little less back than you put in”. It needn't be that way, if you stay nimble. Convincing search engines to refund money is a lot tougher and a lot more work than proactively watching for problem visitors and taking steps that you deem appropriate.

Some things you can do to stay ahead of the game. This is by NO means an exhaustive list, but it's a start. It's sorted by the level of protection in ascending that you may need.

1> Let your visitors know that you are tracking them and know quite a bit about them. For instance, if you visit www.sofizar.com , you will see information about yourself. You can display this information to all your visitors, or only to some of them. It can be in-your-face or subtle, but it will remind at least some of the fraudsters that they are being watched. Sofizar provides free sample code and connection to its database allowing you to display “premium” information(like City, ISP, ISP contact number).

2> Invest in a serious visitor tracking software. Set alarms based on the number of times a person clicks on your site in a certain time period(hourly, weekly, monthly). Display the same information to someone who is definitely PPCing your budget to death, as a custom message box. Something harsh, if the pattern keeps up. “We are logging the usage, and we are noticing that you keep clicking on our site through PPC. If you don't cease, we would be forced to call your local ISP at +91-23-344-5678”(if you see the information that we can glean about visitors, you will know we can get even more specific). This will weed some of the casual fraudsters.

3> Start checking for things that we have discussed earlier, by investing in an industrial strength data collection package. Based on your data collection, one strategy is to score each visitor, deducting(or adding points), based on the following (non exhaustive) list.

a. Visitor conversion/past conversion history.

b. Visit Depth Analysis.

c. Visit Time Analysis(time spent on each page, and time of day the visit happens).

d. Cookies/Javascript/”Unknown OS”

e. Keyword Cost analysis.

f. Anonymous Proxy Server

g. Is part of “Fraudster list”.

h. Country/Localization analysis(are you really targeting people in Sao Paolo , Brazil for your French Restaurant in New York ?).

4> Do pattern matching. See what your top 20% of your customers do as part of a “macro pattern” and match the visitor against that pattern.

Keep in mind that you will get a few “false positives” and vice versa. A few innocent people may get tagged unfairly as “fraudsters” while a few “fraudsters” may well give you the slip. It's not an exact science, but over a period of time you can get fairly close. If you decide to take up your case with Google, you have to make a very convincing case. All based on meticulous data, instead of (what may be considered by them as) paranoia.

Over the long term, as the threat evolves and the fraudsters improve, you have to keep adapting your strategy using your friends, diligent data collection, statistics and pattern matching.

If you have any further question, comments or want us to give you a free evaluation if your PPC campaign is a likely magnet for fraudsters, please email to: art@sofizar.com or visit http://www.sofizar.com/contact.php

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