Always Be Testing

Bryan Eisenberg and John Quarto-vonTivadar, his chief scientist, wrote a guide to Google Website Optimizer, Google's free tool for A/B and multivariate testing of web pages. They show how to test and adjust a site so that more visitors get in touch, buy, subscribe or take other profitable actions. Topics include setting up a testing framework tied to business goals, grouping products and services from the customer's point of view, improving landing pages and sales copy, and choosing the right test for each situation, and the guide supplies more than 250 ideas to test.

Raluca Radu, owner of MTH Digital, named it in an interview among her must-read business books.