If I click the link, I get the following message: "This page is unavailable when linked to fromn ews.ycombinator.com. Please find a less toxic place to spend your time."

Pressing F5 obviously works around this referrer trick, but I find it interesting that someone would (ab)use the HTTP referrer to send a message to visitors from a specific site.

This is quite an innocent one, as it is obvious. But what about news/informational sites that subtly modify their message and influce. At least I would not have noticed.