Online advertising expert David Szetela is Owner and CEO of Clix Marketing, one of the few agencies that specializes exclusively in pay-per-click (PPC) advertising, creating and optimizing clients Google, Yahoo!, Microsoft, Facebook and LinkedIn advertising campaigns. Clix is also one of the few agencies paid according to their performance,  as a percentage of profit or a commission per sales lead generated. Szetelas 25+-year career working for small magazine publishers as well as Apple Computer and Ziff-Davis Publishing has provided him deep experience in direct response marketing. His articles on PPC advertising have been published in MediaPost, Search Engine Watch, Search Engine Land, MarketingSherpa, and on his company’s blog, http://www.clixmarketing.com/blog. He is the PPC expert faculty member for the online certification company Market Motive. He is also a frequent speaker at Search and Advertising industry events like Search Engine Strategies, SMX, PPC Summit and ad:tech, and he hosts a weekly radio show called PPC Rockstars (http://www.webmasterradio.fm/Advertising/PPC-Rockstars/), distributed by Webmasterradio.fm and iTunes. His book on PPC Content Advertising, Customers Now, was published in November 2009, and his Wiley/Sybex book, PPC Advertising on One Hour a Day, was published in July 2010.