Measurement by Proxy: On the Accuracy of Online Marketplace Measurements
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Presented at USENIX Security 2022 by
A number of recent studies have investigated online anonymous ("dark web") marketplaces. Almost all leverage a "measurement-by-proxy" design, in which researchers scrape market public pages, and take buyer reviews as a proxy for actual transactions, to gain insights into market size and revenue. Yet, we do not know if and how this method biases results.