David Szetela (Louisville, KY) is Owner and CEO of Clix Marketing, one of the few agencies that specializes exclusively in PPC advertising. He is active in the Search Engine Marketing Professional Organization (SEMPO) and is one of the authors of SEMPOs Advanced Search Advertising course. He has a weekly PPC column at Search Engine Watch (searchenginewatch.com), and his PPC articles have been published in MediaPost, Search Engine Land, MarketingSherpa, and in industry blogs. David is the Principal PPC Editor of the Search Engine Marketing Journal and a frequent speaker at key industry events, including Search Engine Strategies, SMX, PPC Summit, and MarketingSherpa Summit. He also hosts a weekly radio show called PPC Rockstars.

Joseph Kerschbaum (Bloomington, IN) is director of client services at Clix Marketing and has written hundreds of articles on paid search advertising. His writing has appeared in numerous industry blogs and offline as a regular contributor to Website Magazine. Joseph has created and optimized numerous PPC campaigns large and small.