Performing A/B testing of content of a webpage includes selecting one of at least two different versions of the webpage to be displayed to a user through an interactive user interface (e.g., a web browser) based on an identification code, such as an Internet Protocol address or tracker identifier supplied...http://www.google.es/patents/US7975000?utm_source=gb-gplus-sharePatente US7975000 - A/B testing of a webpage
