[sray]

Without input validation, and without any clear motivation as top why this experiment was important, I was perfectly happy entering garbage or blank forms.

What I'm getting at is that without any real motivation for submitting a form, I don't really care what I enter. This is different than when I enter a captcha "in the wild" - in that case I would try really hard because I care about successfully submitting the form.

I'm not sure what this experiment is trying to prove, but without that motivation, I don't believe it's a proper simulation of real captcha use.

[abrichr]

That's a good point. We'll have to think about how to address that.

[astar]

coughgamificationcough

Just kidding. You could always do a drawing. Ask for a donated ipad. everyone who answers 100 or more catchpas correctly are eligible to be in the raffle.