Generate a link by clicking the "Create human check" button. Then send this link to a suspected robot. They'll be asked to fill out a captcha, and you'll be notified upon verification.
Heads up: the "names" are not as heavily moderated as HN comments.
"Sorry I'm not allowed to follow links."
Honestly, most real human chat-center/help-desk folk are probably juggling ten conversations and really aren't allowed to follow links to strange websites.