Peter Morales' paper, Congregations and Beyond (found here) raises some interesting issues for UU's and other religious people, especially those in small denominations and those which practice congregational polity. (polity is church governance. Congregational Polity is the form of government that makes congregations the basic unit of the denomination. So, for instance, technically, you are only a UU if you belong to a congregation which belongs to the UUA. You can't be an individual member of Unitarian Universalism.)
The basic problem is that the institutional category, "congregation", once virtually a pillar of American society, has become less and less interesting to younger generations. (Congregation is still a pillar of society in a few places, notably the South, or in Utah. You can tell this is the case when the first question asked of a newcomer to town is, "What church do you belong to?" Some newcomers to town take this as a rather agressive evangelizing effort but it probably isn't. It is probably just a social locator. "Oh...he's an Episcopalian. Got it.")
There's no doubt about the declining fortunes of "congregation". To recap, here's a paragraph from my part of last year's Minns Lectures. (find it here)
Just to give you a sense of how the market share of all religion has changed over 50 years, let me go over some statistics.
Now, there is a difference between "no religion" and "no congregation." There are actually a fair number of people who do have a religion but don't belong to a congregation. But there will not be very many people with no religion who DO belong to a congregation. So, for those who are interested in congregations, these statistics are even more dire.
When you notice these overall statistics, you have to remark that the ability of Unitarian Universalism to hold its own over the past generation is a show of strength, not weakness. And, indeed, most denominations have done much worse than we have.
Peter is asking what we should do. It's something we should all be thinking about.