Here is Mark Pincus, CEO and Founder of gaming company Zynga, talking about what he calls “Ghetto” testing, but which I prefer to call Guerilla.
This is very lean startup thinking — ME LIKEY!
Another related link (and these are both coming from Steve Blank’s ‘The Lean Launch Pad’ class)…
Modify! –> Measure! –> Iterate!
That slideshare preso goes into some great details on the non-business-ey business model.