It was a success in the sense that we learned a lot. If anyone wants to know about that, a lot of it is in the explanations here:
https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...
https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme...
Some good threads to start with might be https://news.ycombinator.com/item?id=21607844 and https://news.ycombinator.com/item?id=22902490.
These explanations have become pretty stable by now—stable enough that I repeat myself incessantly: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
*Edit: here's where we called it off: https://news.ycombinator.com/item?id=13131251
What that tells me is that the forces creating the HN front page don't have much to do with changes in the userbase over time. That's interesting, and I think to most people (me included, and pg probably included) counterintuitive.
My memory is hazy but I probably found out about HN via Slashdot or via Michael Arrington's HN post [0] from Mar. 10, 2008; so I have been reading HN since before Dec. 13, 2008 and still come back because of some really good conversations that can be had here, compared to elsewhere on the Internet.
0: https://techcrunch.com/2008/03/10/little-known-hacker-news-i...