I am giving CouchDB a look over. I had heard about it from several blogs, and decided to take the plunge on the weekend.
As always it was simple to install with "port-install couchdb" the longest part was waiting for the Erlang OTP platform to build. All in all it took a episode of some trash TV to install.
I have a bit of a problem with the rc.d script, which doesn't seem work, but apart from that it seems pretty cool.
Will try to port StarTracker to it over the next little while...