Notes on routing, redirects and sample quality
Practical guides for researchers, panel operators and developers who move respondents between systems.
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How to secure survey redirects with HMAC signatures
A quarter of supplier traffic still arrives on links that can be edited in the address bar. Signing redirects takes an afternoon. The one rule people break is computing the signature in the respondent's browser.
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Setting up third-party sample redirects in Qualtrics
Capture the session ID with embedded data, send each exit to the right endlink, and test every path with a sandbox session. The part most setups get wrong is the terminate branch, not the complete.
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Survey quotas and over quota: balanced samples without wasting respondents' time
Quotas are how a sample ends up looking like the population it describes. Managed carelessly, they are also the single biggest source of wasted respondent time in online research. The difference is operational, not statistical.
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What the data quality benchmark says about your feasibility estimates
The Insights Association and GDQ benchmark pooled close to two million survey records from 51 companies. Most coverage quoted the removal rates. The more useful numbers for anyone quoting a study are about incidence, length and B2B cleanout.