There is a "nosql" community growing and they apparently met not too long ago in San Francisco.
A blog entry "NOSQL debrief" has some good presentations and videos that can be viewed that were produced as part of that community event.
The key points for me is that this technology is evolving through open source communities to support distributed, non relational databases. To a very
large extent it is being used now in production at a number of organisations such as LinkedIn, Yahoo etc.