As of Nov 1999 less than 100 people are listed on the site. Developing interfaces to enable social browsing sounds very simple. One defines people's relationships to one another - here we track whether a person is family, colleagues or friends with other people in the database, and create rules about how these relationships are applied. The result can be that relevant information is easier to find. You can see that very soon the whole process of social browsing becomes very complex.
Friends become colleagues and vice versa.
If you are building an interface to allow relationships to be set automatically some assumptions will be wrong. Social implications of having few friends defined on the site. The further from the starting point you get the more information you need to make understand the relationship. We start out by listing just the firstnames, but further away from the source you may need lastname, country etc. Having a web site with user login or tracking assumptions can be made about the default relationships.