This posting is a bit of a work-in-progress since (a) it's thrown up new issues that I don't have a better home for yet and (b) I don't expect to get it right first time!

	Note: From this perspective, Community Builder actually does nothing to foster new communities only to grow existing ones, however small

I've been challenged to think Community builder (still looking for a better name) idea not from a technical perspective, but from a user perspective.  I think I've made an interesting case for the technology, but I agree that I probably haven't said anything yet that would persuade my mother that this was of interest to her (Downloaded Radio yet Mom?)What I am suggesting is a tool, or a service, that would help you to find existing individuals or communities of people who are discussing things that you have expressed an interest in.   You express an interest in something by posting about it in your blog.

The upshot is that by writing about something, you will automatically be notified about other people who are writing about, or have written about the same or similar things.

	There is a temporal perspective here, you may only be interested in people who are currently writing about these topics.  Additionally you may not want to be notified about people who start writing about something you wrote months ago