It's more focused on actual tech. It's also gotten more like those sites since people have invited more people from those sites that I can tell. It's definitely changed a bit over past few years.

One of its continued strengths is the number of useful or deep articles in tech combined with a high number of people in the community that write them. The audience is pretty passive. We have some people who steadily have good insights and submissions on specific topics. Then, there are some that show up out of nowhere with whopper comments you won't find in other places. They avoid high-traffic/noise sites like HN. So, you only see them on places like that. So, I read both the orange and red sites. :)