Ray Poynter, Navin Williams and Sue York have just published a few chapters from their upcoming "The Handbook of Mobile Market Research: Tools and Techniques for Market Researchers" online free of charge. You can read these chapters below or download them your computer.
Publication date is set to 29th of August and you can pre-order the book on Amazon. We'll definitely be buying a few copies to the office.
Full disclaimer: We helped Ray, Navin and Sue to review some chapters of the book.