It's limited mainly for simplicity. Since it's intended to be a cheap and quick answer, we figured $5 and 50 questions seemed reasonable for most. Perhaps we can keep the standard, advertised solution at 50 for $5 but when you buy offer the option to upgrade to more questions.

I personally think $5 is a great price point, but would make 3 tiers of plans.

1) Free, limited number of responses (maybe 5/month?), ad supported.

2) $5, Unlimited number of responses, no ads.

3) Skinable version for companies, allows them to manage questions/responses asked by employees.

If you go that route, make sure to make it more discoverable. If people write off your product because they need more responses, they're never going to figure out that they could get more.

Currently no, you can't set up a higher # of responses.

We found that 50 responses offers a good set of opinions without taking too long to finish. What are some other options you'd like to see?