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The most obvious and widely used tool for PPC keyword research is Google’s Keyword Planner. Google’s Keyword planner is free, and it’s a must if you’re going to be using AdWords, Google’s PPC advertising platform. Google AdWords Keyword Planner which allows you to get keyword ideas, see performance insights and generally plan Search Network campaigns. It can provide a general direction for ad group organization and broad keyword selection, but you may miss out on some valuable long-tail keyterms if you rely solely on this tool. This tool allows advertisers to search for new keywords and ad group ideas. Google’s tool provides statistics for each keyword including search volume and average cost per click estimates. It lets you test out viable search terms, find alternative terms as they relate to your industry and services, and even get historical statistics on your keywords.