I agree with you regarding the fact that no one in congress reads HN, however, I do believe that many people from very big companies (including Google, Facebook

I agree with you regarding the fact that no one in congress reads HN, however, I do believe that many people from very big companies (including Google, Facebook, Yahoo, etc) do spend time on HN. Perhaps "going dark" can help encourage said companies to show support - in a similar way that the Reddit post has triggered this post.