Google adword is basically an advertising invention, and foremost source of returns and its feature is basically to improve your ROI. If you have a budget of $100 than Google ads helps you to get $300 business in a very simple method. For this you need to do is that. Ask your SEO Expert to set up a account at no cost on Google Adword. Analyze it. Make notes of your business information and requirement. Write ad text. Or place image ad. Or do simple Ask a PPC Expert to do it for you.
You will find an instant improvement in the sales or leads.
Google says something about Impact vs. activity of its adword.
"Click fraud is similar to email spam in a lot of ways. The most significant similarity is that the seriousness of the problem is not measured by how much spam is sent, but rather how much gets into a user's inbox. When looking at click fraud, the most important measure is not the "activity" metric - which measures the volume of invalid clicks that occur overall - but the "impact" metric. The activity metric could go up or down significantly and the impact on advertisers would not change if filters are catching the invalid clicks. So far, we have only publicly shared this activity metric, which we have disclosed as being less than 10% of all clicks, and explain in more detail next. After that explanation, we want to talk about the impact metric for the first time. This measures what percentage of all clicks are clicks reported by advertisers which, after investigation, turn out to be invalid and have not already been caught by Google. Explaining these topics is complicated, but we're going to give it a try."
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Reference: http://adwords.blogspot.com/
Source: ExpertEntity.com Editors' Choice