0: Providing access without requiring the user to sign up for an account would make it easier for people to provide feedback.
1: The signup form suggests that there might be an approval process also standing between an interested developer and access to the service.
2: What I am saying is deal with the problem of too much use when it occurs. Don't optimize on it at the expense of collecting feedback for iteration.
3: If the future might include charging for an API key or some other form of monetization or rate limiting, just be up front about that possibility now.
4: Alternatively, go out and sell it to customers and use their feedback. Either way makes it easy for developers to use it immediately upon knowing about it and to provide feedback.
5: To me, this is a B2B product. What I expect from a B2B salesperson is to tell me what there product cannot do...perhaps even more than telling me what it can do. I expect technical expertise in a B2B sales pitch that I don't expect when looking at a consumer product.
6: ViaSocket is a technical product. Tell me what it is in technical terms. Tell me what it isn't. Tell me how I can use it. Tell me how I cannot or shouldn't use it or at least tell me the use case it was designed to address: is the use case 10, 100, or 10.000 API calls.