Yes, you post it to HN (if it is any good). If it has been posted before then this is the same as an upvote (well you did think it was relevant and interesting

Yes, you post it to HN (if it is any good). If it has been posted before then this is the same as an upvote (well you did think it was relevant and interesting did you not?) and if it is new then you will see it posted to the new items page with your "handle" attached.