Wow you've got a lot going on. Do you have any stats on usage you feel like sharing? I'm curious how people have discovered this and how it has grown since this seems outside any circles I am around except HN.
So, more than 1,000 users have signed up as of now. But because all content is public (does not require login), most traffic is unauthenticated. Some topics are ranked decently in Google, so users come and pick a resource and leave. Which is completely fine (that’s how Google itself works) but that does mean that the social features are currently underused.