We agree that maintaining data quality is the biggest challenge and really the crux of this business. We have initial filters that look for incorrect answers to "checker" questions (e.g. What browser are you using? In which time zone do you live?), an outlier response speed (too slow or too fast), etc. And we're working on a more sophisticated system to really address this.

Data quality with initial partners has been good. We'll be working hard to keep it that way.