Unless you have a "invite code", you can not do anything. There is a "join waitlist" link that just goes to the frontpage...
Top post has ~300 upvotes and ~100 comments.
I also signed up for a MySpace account, I’m also not sure what that is now.
In fact, I don’t even really know what HN is, I just like that there’s no in-jokes or pictures.
It's a bummer it requires a signup to use.