Some food for thought from Brian McLaren as found in the pages of Mixed Economy the journal of Fresh Expressions.

An eco-tone… is the meeting place, the overlapping point, the boundary, between different cultures… It faces inward to the institution and outward to the emerging culture… [Brian describes himself as] an evangelist for Fresh Expressions in the USA… Our goal was to create a new embodiment of church within the traditional structures and liturgical sensibilities of the Episcopal Church.