Aleyda Solis shares four fundamental questions to help marketers weigh the pros and cons of mobile search. She points to a set of developers' resources to build smartphone-optimized sites and explains the best use of Google Analytics for mobile. Aside from Google's tools like Webmaster and Keyword, Solis tells marketers about an add-on from Firefox. Most sites rely on responsive design, but she also provides advice for those who cannot implement responsive design for one reason or another.