Abstract: Systems and methods for computer-based community networking to facilitate the trade and exchange of goods and/or services between registered users are disclosed. In the disclosed systems and methods, a first registered user affiliated with a set of one or more community groups searches for an invitation to buy or sell a good or a service, and in response to the search, the disclosed systems and methods return a list of one or more invitations comprising at least one invitation associated with a registered user that is affiliated with at least one community group of the first set of one or more community groups.