If the major objective is to drive customers into your stores, a store locator link and click to call function are key.

FORBES: Steve Madden on Mobile Commerce

Canvas Talk is a function that can send texts or images even during a voice call.

ENGADGET: Pantech Vega R3 packs Snapdragon S4 Pro, 5.3-inch screen into one hand

Call me crazy but leaders cannot function on a global scale if they worry about every single tiny detail in the business.

FORBES: The Balance Between Leadership and Accountability

Much of the growth can be credited to Nextel's push-to-talk service, the walkie-talkie-like function that allows users to page and call friends instantly with a single button.

FORBES: Nextel Presses 'Push-To-Grow' Button

Often it is a function of runway, family scenarios and other external factors that allow them to find their way to success, or call it a day earlier on.

FORBES: Can Entrepreneurship Be Learned?