These users were mostly random people in coffee shops, on the street, etc. I'm sure there's still a bias when someone is looking over their shoulder, but we co

These users were mostly random people in coffee shops, on the street, etc. I'm sure there's still a bias when someone is looking over their shoulder, but we could get a pretty good idea of whether average users 'get it' right away or floundered. We went through about 5 full redesigns of the walkthrough based on this testing before we arrived at the current version. Of course, we'll keep experimenting and improving in future versions.