Hi webcaretech,

I could write a 3 volume series of books to answer that broad question and still have plenty more to cover. Can you provide a few specifics? Are your impressions few, or are you getting plenty of impressions, but few clicks? What range of quality scores are you receiving? Can you shed some light on how you've grouped keywords? Are you targeting the Content Network, or just the Search Network?

There are a lot of things you can do to increase conversions. The most important thing is targeted traffic. If you are selling accounting software and buying clicks for the word software its going to have a much lower conversion than if you are buying clicks for "accounting software".

There are a huge number of things you can do to increase conversions from directing traffic on your website, to creating compelling copy etc.. but the first step is to have targeted traffic.