ผู้เขียน: Elizabeth Marsten

John Arnold is the author of E-Mail Marketing For Dummies and coauthor of Mobile Marketing For Dummies. Ian Lurie is President of Portent, Inc. Marty Dickinson is President of HereNextYear. Elizabeth Marsten is Director of Search Marketing at Portent, Inc. Michael Becker is the Managing Director of North America at the Mobile Marketing Association.