Here's the presentation from last year's PGCon, it's not exactly easy to follow, but has some hints on how this can be used: http://www.pgcon.org/2010/schedule

Here's the presentation from last year's PGCon, it's not exactly easy to follow, but has some hints on how this can be used: http://www.pgcon.org/2010/schedule/events/227.en.html http://www.pgcon.org/2010/schedule/events/227.en.html