YouGov告訴BBC，他們與其他民調公司不同：他們自行招募和維護參與者面板。他們使用一套多層次防護，包括身分驗證、裝置指紋識別、多來源地理定位、即時威脅評分與支付監控，避免不法者混入。
spend a lot of time in the allocator, and produce a bunch of garbage,
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With honey, Majtán says, "the best way is just to buy from local beekeepers". This helps ensure that consumers know what they're buying, and who they're supporting.
You look at a region of the image. If all the pixels are roughly the same color (below some threshold), you store the average color for the whole region as a single value. If the pixels vary too much, you split the region into four quadrants and try again.