The topic of when one should try a pay-per-click marketing campaign comes up on SEO Chat from time to time; you can check out the most recent thread on the subject. It’s not an easy question to answer. Forum regular Crimson Penguin notes that, with Google AdWords, you can get increased traffic and sales from a good PPC campaign – and just as importantly, from an SEO’s perspective, you get a large amount of data that is also highly measurable. Crimson Penguin goes on to state that I would always suggest using PPC advertising if it makes sense financially for a business. If a company can aff…