>What are some attributes of social media that are missing on forums
I find it surprising that the thing that's missing from the list is to me the only thing that matters, the creation of an identity and social graph. I don't think the algorithm or technical details are that important, the qualitative difference is that on social media you are someone. You have a persistent profile, you have "friends", you invest in building rapport and status, you have followers or are a follower.
On social media you interact with people, not with topics. There are creators, not discussions. On HN you could for practical purposes shuffle everyone's username each morning and it wouldn't matter for 99% of us, and that eliminates most of the dynamics associated with social media today.
I find it surprising that the thing that's missing from the list is to me the only thing that matters, the creation of an identity and social graph. I don't think the algorithm or technical details are that important, the qualitative difference is that on social media you are someone. You have a persistent profile, you have "friends", you invest in building rapport and status, you have followers or are a follower.
On social media you interact with people, not with topics. There are creators, not discussions. On HN you could for practical purposes shuffle everyone's username each morning and it wouldn't matter for 99% of us, and that eliminates most of the dynamics associated with social media today.