Eric Enge is the founder and CEO of Stone Temple Consulting, a leading SEO firm that serves a wide variety of companies, including a number of Fortune 100 companies. He writes regular columns in Search Engine Land and Search Engine Watch, and has also provided feature articles to SEOmoz. The interview series he publishes on the Ramblings about SEO blog (http://www.stonetemple.com/blog) regularly provides information directly from senior people fro Google and Microsoft on a regular basis. Eric is also a highly regarded speaker, and regular speaks on Internet marketing topics at conferences such as Pubcon, Search Engine Strategies, Search Marketing Expo, the American Marketing Association, SEMPO, Internet Retailers, O'Reilly, Web 2.0, and many others. You can also see content published by Eric on a regular basis by following him on Twitter (@stonetemple) or putting him in one of your circles on Google+ (+Eric Enge).
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.
Rand Fishkin is CEO and co-founder of Moz, a Seattle-based startup focused on building software for marketers.