The first thing you need to know is that Google will charge you more for non-relevant ads than they will for relevant ads, and clearly if you have decided to use Google ads then you will be looking for the most traffic at the least expense. That statement is all about click through rate and click through rate is when people see your ad and decide to click on it taking them to the target URL. The higher the click through rate the more traffic you get and the more chance of making a sale. If your ads have a low click through rate, you get less traffic and less chance of a sale, plus Google are likely to charge you more because the ad is not being effective and they are not earning enough due to the low level of clicks. In a nutshell if you write a non-relevant ad (versus your chosen keywords), you are likely to get very little traffic and you pay more for the privilege.
This along with the next paragraph really is the crux of using Adwords, the ads you produce must be absolutely laser focussed both in terms of selecting the keywords relevant to the ad you create and then delivering on the promise the ad offers.
So what does that mean exactly, it means there is no use choosing a keyword that is focussed on a B&B when you offer self catering for example, or an iPad when you are selling digital cameras. This is the second part of the equation i.e. if you marry up your selected keywords brilliantly with your chosen ad format and lots of people click on your ad, at a cheaper rate reference the first paragraph but remembering you have to pay for each click all the same, then they arrive at the URL you have promoted and what happens. Doh!!! wrong product and off they go on the search for the right product. So who is the winner? actually no-one because you didn’t get the sale and the prospective customer didn’t get the product they were looking for.





