Presented at the Pivotal Labs hack day after GoGaRuCo 2010 to about 20 people, mostly ruby developers. In San Francisco, CA. 09/19/2010
It ran a little long, 15 to 20 minutes, but people told me to keep going. It was not recorded at all.
Hire me to punch up your slides, firstname.lastname@example.org / @veganstraightedge : twitter.