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Re:How to Crawl the Web Politely with Scrapy by greglindahl on Thursday August 25, 2016 @03:20PM (#12361686)
I was referring to an actual rate limit, not crawl-delay. For example, YouTube is pretty strict about rate limits:

http://www.bing.com/search?q=%22We+have+been+receiving+a+lar...

I agree that crawl-delay is rare, and often it's set too long so that it's impossible to fully crawl a site -- as if the webmaster set it up 10 years ago and never updated it as their site got faster and bigger.

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