Stephan Spencer
Science of SEO
(twitter id)

Science of SEO

Stephan Spencer is author of Google Power Search, co-author of Social eCommerce, and co-author of The Art of SEO, soon to be in its third edition -- all published by O'Reilly.

Stephan founded Netconcepts, an SEO and interactive agency in the 1990's. The firm was acquired in 2010 by Covario.

Stephan is the inventor of the pay-for-performance SEO technology platform GravityStream, now part of the Rio SEO toolset.

Stephan is a Senior Contributor to Practical Ecommerce and to, and a columnist for Search Engine Land, Multichannel Merchant, and The Huffington Post. He's also been a contributor to DM News, Catalog Age, Catalog Success, Building Online Business, Unlimited, and NZ Marketing magazine, among others.

Stephan is a frequent conference speaker on SEO and other online marketing topics for the Direct Marketing Association (DMA), American Marketing Association (AMA),, Internet Retailer, SMX, IncisiveMedia (Search Engine Strategies), O'Reilly/TechWeb, PubCon, ECMOD, IQPC and IIR. His hundreds of speaking gigs have taken him around the globe -- everywhere from Berlin, London, Toronto, Santiago, Sydney and Auckland, to New York, Chicago, San Francisco, Los Angeles, and places in between.

Stephan is an avid blogger. He blogs at Stephan Spencer's Scatterings,,,, and Google, I Suggest... He's also been a contributor to Searchlight (part of the CNET Blog Network), Blog, and MarketingProfs Daily Fix.

Stephan is on the board of Impact Network and on the advisory board of CrowdGather.

He holds an M.S. in Biochemistry from the University of Wisconsin-Madison.