B2C Marketing Insider caught my attention this morning with this great piece highlighting a new study of the mobile strategies of Fortune 50 companies. (There’s also an informative slide show here.) I was surprised to see how well some of the world’s biggest companies are embracing mobile: 58 percent offer mobile applications, for instance, and mobile transactions are supported by 43 percent of those who have a mobile-optimized site or downloadable app. But while 62 percent of the Fortune 50 are using mobile in at least one form or another, only 39 percent make those campaigns known on their Web sites. That’s a huge disconnect between investing in mobile and letting your customers know about it, and it means that those campaigns aren’t coming close to reaching their potential.