As its name implies, WikiEthica is a participatory website concerned with describing a local ethics. The first WikiEthica was produced for Billings, Montana, USA, by students at one of the colleges there. You should take a look at it at WikiEthica.
The underlying assumption of local ethics is that all values are carried by everyone, but each person and each group ranks the set of all values differently. A value, say justice, may be very highly ranked for one person, say, Martin Luther King, or group, say the liberation theologians of South America, but more lowly ranked by another person. It is also recognized that a value can be expressed differently by different people and groups. Using this rank-specific universal value system, we can legitimately speak of ethics that are both openly relative and potently local.
Contact Eric Buck for consulting help in getting a WikiEthica going.