Not exactly anything new, but submitting because I'd never heard of Unbounce before and it looks awesome for doing idea testing and lead generation.
Edit: Ouch. Just saw their prices. Steep.
I'm guessing you need to be pretty established in order to draw the traffic for this testing to be meaningful. Otherwise how can you build traffic with no rep. and nothing concrete?
They claim to be using Adwords. But, I think you're right. Just getting a handful of people from Adwords is hardly likely to be conclusive.