Web Survey Creator makes it easy to "Screen-out" invalid respondents or "Quota-Out" respondents that are of a type you already have enough responses for. The reason for the termination is automatically tracked - making it easy to distinguish "completes", "screen-outs" and "quota-outs".
Respondents can be redirected to a particular URL from a terminate page, making integration with Panel Management Software like
Contact Profiler easy.