For anybody interested in integrating the D3 vizualization library in CouchDB I've written a three-part tutorial. It can be found under:
https://github.com/mbostock/d3/wiki/Integrating-D3-with-a-CouchDB-database-1 https://github.com/mbostock/d3/wiki/Integrating-D3-with-a-CouchDB-database-2 https://github.com/mbostock/d3/wiki/Integrating-D3-with-a-CouchDB-database-2
