Influence - The Psychology of Persuasion by Cialdini. http://www.amazon.com/Influence-Psychology-Persuasion-Business-Essentials/dp/006124189X/ref=pd_bbs_sr_1?i

Influence - The Psychology of Persuasion by Cialdini. http://www.amazon.com/Influence-Psychology-Persuasion-Business-Essentials/dp/006124189X/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1216856193&sr=8-1 http://www.amazon.com/Influence-Psychology-Persuasion-Busine... The 22 Immutable Laws of Marketing - Violate Them at Your Own Risk! http://www.amazon.com/22-Immutable-Laws-Marketing-Violate/dp/0887306667/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1216858700&sr=1-1 http://www.amazon.com/22-Immutable-Laws-Marketing-Violate/dp... Don't Make Me Think: A Common Sense Approach to We Usability, by Steve Krug: http://www.amazon.com/Dont-Make-Me-Think-Usability/dp/0321344758/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1216860599&sr=1-1 http://www.amazon.com/Dont-Make-Me-Think-Usability/dp/032134... Information Architecture for the World Wide Web: Designing Large Scale Web Sites, by Paul Rosenfeld and Peter Morville: http://www.amazon.com/Information-Architecture-World-Wide-Web/dp/0596527349/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1216860826&sr=1-1 http://www.amazon.com/Information-Architecture-World-Wide-We... Why We Buy: The Science of Shopping, by Paco Underhill http://www.amazon.com/Why-We-Buy-Shopping-Updated-Internet/dp/1416595244/ref=sr_1_1?ie=UTF8&s=books&qid=1264609112&sr=1-1 http://www.amazon.com/Why-We-Buy-Shopping-Updated-Internet/d... And at least one Jakob Nielsen Usability book.