> fiverr.com. Shell out $100 spread across a range of testers, and give them all slightly different briefings. Some feedback is terrible but there’s some gold there that’s really worth far more than $100.
Also check out Cent (https://beta.cent.co) - $20 in Ether can get you a pretty good set of responses. I am a cofounder - feel free to ama here or at cameron@cent.co