Steve Blank is teaching an entrepreneurship course at Stanford and blogging about it. They're currently working on customer acquisition strategies:
http://steveblank.com/2011/04/15/the-leanlaunch-pad-at-stanf...
http://steveblank.com/2011/04/15/the-leanlaunch-pad-at-stanf...
There's a few of these floating around, this is the most recent one I could find: http://www.slideshare.net/dmc500hats/startup-metrics-for-pir...