Nowadays in UaNet more then half of web surfers use the american search engine. In fact, their number is estimated 70% and above, while in the Russian segment (RuNet) Yandex dominates - it used by about 60% of web-users. Google gradually strengthens presence in RuNet, after all almost third of russians are looking for information they're interested in in this search engine.

Such a distribution of preferences leads to the same distibution of the contextual advertising. Advertisers mostly use Google in Ukrainian segment of the Internet, and the share of Google advertising in RuNet is about a third of the total. This makes an objective need not only to choose the right tools and platforms for online advertising, but also to monitor the effective use of the advertising budget.

Click-fraud in Google’s contextual advertising is considered to be hopeless. This is due to a very serious approach to solution of problem of this kind of fraud. As a pioneer of «pay-per-click» they do their best to protect clients from unnecessary financial costs.

It is clear that the primary tool to detect AdWords' click-fraud is ab adequate setup of displaying advertisements. Google gives profound guidance on what parameters should be set to provide effective advertising and optimum price / quality ratio.

There are also mechanisms of targeting ads. It is based on the comparison algorithm of object with the context of searches or partner sites' subject. Each advertiser may use web analytics tools to check the quality of transitions if necessary.

Click-fraud detection is performed automatically: the search engine algorithms and robots are good with tracking behavioral factors, determining the true motives of users clicking ad links.

In addition Google is actively monitoring developments in click-fraud detection tools for AdWords and even buys worthy algorithms, tools, and start-ups.