Business travelers rank adjusting travel plans, making dinner reservations and checking into hotels as three of the top four "must have" mobile applications, according to a new survey from KRC Research and commissioned by Omni Hotels & Resorts.

Besides taking care of travel matters, the survey found business travelers use mobile and social applications to take care of personal items, explore the local area and connect with friends and family.

Andy Kessler has republished his WSJ interview with 22-year old Facebook founder, Mark Zuckerberg.