Providing on-line services in the fields of social utilities for documenting, displaying, establishing and customizing relations between users and for facilitating upload and share of information therebetween; Providing on-line services in the fields of social utilities for documenting, displaying, establishing and customizing relations between users and elements of their environment, and for facilitating upload and share of information related thereto with other users; Providing on-line services in the fields of social utilities for facilitating interaction between users. Providing on-line data management services for uploading, storing, data mining and searching digital user generated content; Providing on-line services in the field of social utilities for representing a user various social contexts over data networks, for associating digital contacts to these various social contexts and for managing sharing of information related thereto