Do you not work in an equal opportunity workplace? Are you concerned that someone might be grepping the DNS resolution logs to find closeted homosexuals? Are you legitimately concerned about retribution if someone believes that you're homosexual?

Whoa - whoa. None of those things!

It falls in the same bucket as russianbrides.com. I just don't think there's a reasonable explanation for browsing such a thing at work.

I can pass off HN as keeping tabs on current software and industry trends.

It sounds more like a porn site, of which any kind is frowned upon in many workplaces.