Operating online marketplaces for sellers of goods and/or services and providing trading of goods and services by means of a global computer network, namely, providing a website allowing users to buy, sell and exchange items with other users and providing evaluative feedback and ratings of users' goods and services, users' performance, delivery and overall transaction experience in connection therewith; providing a searchable online advertising guide featuring the goods and services of online vendors; providing a searchable online evaluation database for buyers and sellers; advertising and advertisement services; customer loyalty services and customer club services for commercial, promotional and advertising purposes; promoting the goods and services of others by advertising them in a social e-commerce platform and as hyperlinks in other social media sites; arranging and conducting temporary physical marketplaces for buyers and sellers to meet, trade, and exchange goods