Abstract: Technologies for providing a social discovery system enable a user to complement his or her real world activities with online services. For example, the user is associated with a computing device and a user context. A server connected to the computing device determines an offer for a service based on the computing device and the user context. The server may limit the acceptance of the offer to predefined real world physical conditions. The conditions may require the user to accept the offer while being located in proximity of a second user who has received a similar offer. The server receives from the computing device a request accepting the offer and demanding an activation of the service. The server compares the request to the conditions, authenticates the computing device, and activates the service.