Earlier quoted context omitted.
No they don't, Google and Bing respect robots.txt. Most websites would open it up to them because they need the traffic, so it's a type of scraping that is beneficial. Any other scraping, especially when ignoring robots.txt, is unsolicited. And if said website takes additional advanced anti-scraping measures, and you persist in bypassing that too, then to me you're clearly unethical, even if it's technically legal. "…
> Any other scraping, especially when ignoring robots.txt, is unsolicited. And if said website takes additional advanced anti-scraping measures, and you persist in bypassing that too, then to me you're clearly unethical, even if it's technically legal. I suppose it just comes to down to your own morals, but I see nothing at all unethical about scraping a site for personal use provided that it's done gently enough to…
The article talks of large scale scraping, which includes all kinds of bypassing tools, proxies, hardware, or commercial services that abstract this away.
This industrial scale level of scraping is not the same thing as you saving a local copy of 3 web pages. The scale is a million times bigger and for sure it will not be for personal use.