We need to look at the type of social groups interacting and using it though. Most people on HN I think would use Facebook less, so we can't be the demographic

We need to look at the type of social groups interacting and using it though. Most people on HN I think would use Facebook less, so we can't be the demographic to base it on. The News Stream is really a gossip magazine just for people you know. But it's the social party goers that use it. I have a few in my stream, like little sisters. It's used heaps if you're a party goer. Photos, events, global shout outs. It looks like less people use it because you cull a lot of the noisy users.