Techniques that measurably improved our customer development

That's really cool.

Just as launchrock.co standardised a starting page to be put up in minute, there's probably some scope for someone to make a widget for Google Forms+Docs that does something similar here.

Especially useful if such a hosted widget included A/B testing of those phrases to help discover which is the best way to communicate the concept.

I am working my way through the book "Running Lean" by Ash Maurya and his advice on setting up problem interviews and solution interviews is awesome (chapter 7 + 8). I combined the two templates into one interview because our product is already started. Still not selling, but learning focused.

I would definitely recommend "Running Lean", it could save someone a lot trial by fire.