It's often like this. As an example, Wikipedia links[0] get posted frequently and, to me, it seems completely random when they will get a lot of votes. The pages that get votes don't seem to be any less interesting than the ones that do.
I didn't submit it to HN, but I saw this link on the last page of Andy Müller-Maguhns talk [0] at 36C3 - this years chaos commication congress in Leipzig, Germany.
[0] Technical aspects of the surveillance in and around the Ecuadorian embassy in London - Details about the man hunt for Julian Assange and Wikileaks: https://www.youtube.com/watch?v=AoT4lPV96uw
Why should submitter explain the submission?
There's plenty of content in the link, and afaik we are all still being spied on by utterly unaccountable forces.
I don't think it's unreasonable to ask the author what they meant to convey with a random link.
Very little actual news or explanation, just links to wikis or other content without any context.
Perhaps it's often like this but there is fewer people to shape the front-page today.
Perhaps submitter could explain the submission?