Author of Review: Heidi colleges, universities. of Portland Lib, ORReview Source:. Content Library Journal Review: The advancement of information and entertainment technologies for large and small, that some authors call mobile ‘fourth screen’, after movies, television and computers. Martin (director, Ctr. For Media Research, MediaPost) ignores movies mobile evolution and the third doubles. Mobile technologies continue to proliferate, but there are few books on using them for marketing, books on social media marketing usually devote a chapter to this subject. Martin fills a niche with this slim volume packed with information. Readers will learn how to leverage information from a…