From the landing page: "Are you opening a burger joint around the corner? Let us talk to the people from the office building in front of it, your potential customers!" Sorry, I can guarantee you that's not what you're doing.
IdeaCheck uses a professional panel provider to find respondents. We negotiated a contract with this provider to provide entrepreneurs with access to the same class of market research that Fortune 100 companies use. We don't make any targeting claims that we can't deliver on. Yes, respondents are paid, but that doesn't incentivize them to be extra nice - they answer multiple random surveys each day (from different companies doing market research) and are paid for their time, not their opinion. In general, I like the idea of not paying respondents and actively searching for a small target niche, but at the same time you're introducing a non-response bias (you're spamming hundreds of people to receive 25 survey responses - those who reply aren't an accurate representation of the target audience)