You will find a broad difference in SEO talent within the industry that I would mainly categorize as the following: perseverance, trustworthiness, leadership, innovation, forward thinking, and teamwork.
Admittedly I'm not a residential expert in other PPC engines beyond Google's AdWords. My time has great value and as such I put effort into what will provide the client the most return - not just any return. Notwithstanding - opening the door to PPC where a client has not ventured before allows them to reproduce these achievements in do course - should they desire... I don't do professional spoon feeding. :-)
Search Engine Optimization, or replace last word with Marketing, Ranking, Positioning, or Promotion. Also known as (in varying degrees) as Web Marketing, Online Marketing, Internet Marketing, and/or eMarketing is a process by which the end goal is to generate "more exposure" so that as one example: the website owner can develop more sales.