New ask Hacker News story: Ask HN: How can I tell if a site is being rate limited?

Ask HN: How can I tell if a site is being rate limited?
2 by caseyslaught | 0 comments on Hacker News.
I live in a country with less than ideal Internet freedom standards and I have a suspicion that a popular publishing site is being rate limited. How can I know for sure? Is it possible to show a smoking gun?