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by will_hughes 3354 days ago
> Their server could trivially query the url and store the result hash.

I'm not sure what you mean here? I've not seen a site tell you "We don't use this query parameter" if you stick an additional param on there.

2 comments

I think the idea is to detect when different URLs contain the same content. That defends against duplicate entries like example.com/?foo and example.com/?bar (which are the same page).
Fetch the page, hash the contents, compare hashes.