Downloadable software in the nature of a mobile application for creating searchable databases of information and data for use in posting, advertising, searching for, purchasing, trading, exchanging and reserving services and goods; downloadable software in the nature of a mobile application for sending and receiving electronic messages between two or more persons to negotiate the sale, purchase or exchange of goods and services; computer e-commerce software to allow users to conduct electronic business transactions in online marketplaces via a global computer network; downloadable software in the nature of a mobile application for sellers to post products or services to be offered for sale, trade, and purchase with bidding accomplished via a global computer network; downloadable software in the nature of a mobile application for buyers to search for goods or services of interest available from sellers; downloadable software in the nature of a mobile application to facilitate the sale, purchase and exchange of goods and services between persons or entities within a predefined geographic area