Something I'd be curious about: how many of the hits on a new post are by RSS readers before the post hits HN vs. after? I know RSS is the most reliable way for

Something I'd be curious about: how many of the hits on a new post are by RSS readers before the post hits HN vs. after? I know RSS is the most reliable way for me to notice a new post on blogs that update infrequently, and I wonder how many HN submissions come from people seeing a new post in their feed readers.