Computer application and messaging software for mobile devices, namely, software that allows, provides, permits, and facilitates users to accomplish the following functions: (1) to communicate with each other, (2) to solicit each other to perform personalized travel, itinerary and private tour and activity services, (3) to list and rent temporary lodging, access information, listings and announcements about housing, apartments, condominiums, townhouses, real estate, and rental and leasing advertisements for the foregoing, (4) to provide reviews and feedback about listers and renters of real estate, temporary lodging, transportation, temporary parking, (5) to make and receive payments for the rental, purchase and sale of goods and services, (6) to search for travel, transportation, temporary accommodation, temporary vehicle parking listings, travel information and related topics and for making reservations and bookings for temporary accommodations, and temporary parking, (7) to provide travel reviews and recommendations for local attractions, (8) to list and arrange temporary parking of vehicles at residences and businesses, (9) to access information and listing of peer-to-peer transportation, (10) to engage in social networking featuring travel, transportation, temporary lodging, shared vehicles and rides, temporary parking and the rental and listing of real estate, (11) to message among guests of lodging accommodations owned and hosted by others and among the hosts who list lodging accommodations for rent, (12) to permit users to manage, organize, calendar and share with others travel bookings, activity dates, photographs, opinions and preferences through management tools, (13) to arrange for temporary lodging check-in help, (14) listers of goods, real property and services for rent or sale to receive suggested improvements to their listing advertisements, (15) to arrange for professional photographs of the listed goods, property and services, (16) to sell goods and services by others via a computer network and to provide evaluative feedback and ratings of sellers' goods and services, the value and prices of sellers' goods and services, buyers' and sellers' performance, delivery, and overall trading experience in connection therewith, (17) to arrange for the remote exchange of keys to lodgings, and homes and for locking and unlocking lodgings and homes, (18) to provide reviews and feedback about transportation sharing, (19) to search for transportation services