I've occasionally been at public wifi spots in the USA where HN is blocked, because on some 'safe internet' services, the site may be categorized as being relat

I've occasionally been at public wifi spots in the USA where HN is blocked, because on some 'safe internet' services, the site may be categorized as being related to illegal or controversial activities. The HN name and occasional subject matter -- about censorship controversies, security breaches, and circumvention techniques -- contributes to this impression. Some paranoid law-and-order nothing-that-risks-the-children types will classify HN that way, and then choose to block all sites of that classification on certain public/free wifi services. (IIRC, my experience may have been at a Whole Foods market in the US, which was subscribing to some classification lists via OpenDNS. This was years ago, though, and I reported it as a misclassification at the time.)