Stephan Spencer is the author of Google Power Search (O'Reilly, 2011). He is the founder of Netconcepts, a leading SEO firm that was acquired in January 2010 by search marketing agency Covario. He is the inventor of the automated pay-for-performance SEO technology platform GravityStream, now re-branded as Covario's Organic Search Optimizer. Stephan is a regular contributor to Search Engine Land, Multichannel Merchant, Practical Ecommerce, and MarketingProfs, among others. Stephan is a sought-after conference presenter who's spoken on SEO at hundreds of events across the globe for organizations such as the AMA, DMA, Shop.org, Internet Retailer, SMX, SES, PubCon, O’Reilly/TechWeb, Blog World Expo, Affiliate Summit, Elite Retreat, IIMA, ECMOD, IQPC and IIR. Stephan is also an avid blogger. He blogs at StephanSpencer.com, NaturalSearchBlog.com, BusinessBlogConsulting.com, ChangesForGood.org, and GoogleISuggest.blogspot.com. He is currently producing a video-based SEO training and coaching program at ScienceofSEO.com.