Online advertising expert David Szetela is a well-known speaker, author and consultant. He's the former Owner of Clix Marketing, an agency specializing in Search and Social pay-per-click (PPC) advertising on Google, Microsoft, Twitter, Facebook and LinkedIn.

David is a frequent speaker at Search and Advertising industry events like Pubcon, SES, SMX and ad:tech. He has hosted a weekly radio show, PPC Rockstars, distributed by WebmasterRadio.fm and iTunes. His book "Customers Now" was published in November 2009, and his book "PPC SEM an Hour a Day" was published in July 2010 by Wiley/Sybex. He was recently voted Top PPC Expert by a poll of several thousand PPC advertisers.