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9 articles
Extraction technique, block diagnosis, and the parts of a crawler that decide whether it survives contact with a real site.
Research from one country is a study of one country labelled global. Each observation is accurate; the sample was drawn from wherever you were sitting.
Campaigns target a geography, a device and often a carrier, and the verification team sits in none of them. Matching the segment is the whole job.
Retailers do not have a price, they have a price per market and per fulfilment region. Ignore that and you collect one arbitrary sample and call it fact.
Counterfeit listings are not hidden, they are targeted, and a rights holder is the visitor they are withheld from. How to sweep the markets you protect.
A rank tracker without proxies measures what one datacenter IP is shown after a thousand queries. Three problems hide in that, each needing its own fix.
Most scrapers are not blocked because of their IP address. They are blocked because of request shape, concurrency, and TLS fingerprint — and rotating the IP harder makes it worse.
The legal picture is more nuanced than either extreme claims, and the technical picture is harder than most tutorials admit. Both, honestly.
Public profile data and logged-in data are entirely different questions, legally and technically. We allow one and prohibit the other, and here is exactly where the line falls.
Teams underestimate bandwidth by three to ten times, almost always for the same four reasons. Here is how to produce a number you can budget against.
Rotating residential, mobile, ISP and datacenter pools on one gateway, billed per gigabyte with bandwidth that never expires.
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