Do people still use *Social bookmarking? Well, for most of the people using the web, Facebook is the common source of news / links / any hot discussion going on anywhere on the internet. Twitter too, but I have read somewhere that generally, Facebook is the only source nowadays.
I use pinboard for private bookmarking. In fact that's one of the improvements of pinboard over delicious. At the time I used delicious I always felt that I had to work to keep my bookmarks private. I set my privacy setting once at pinboard and I never have to think about it.
For me, pinboard is bookmarks that I don't have to synch, and have automatically available at home, work or wherever.
I certainly see Delicious and HN as being in the same landscape, but different. Delicious has the concept of friends, so there is a social network aspect to it. HN has comments, so there is a forum aspect to it.
I don't have many friends on Delicious, and no friends with really similar interests, so the social network aspect is not worth much to me. HN has lots of reasonably bright and knowledgeable users, so the comments are worth something to me. It's the classic private vs public dichotomy in social networks.
If Delicious could somehow mix in some of the forum aspect that HN has, it could become enormously valuable to me. If it let me read and participate in discussions like HN, but focused on the areas i am specifically interested in (more Rust, less Bitcoin), it would replace HN in an instant.
Very crappy social bookmarking maybe. Without tags it's really tough to go back and find anything especially cause 99%+ of the posts are not of interest to me. With delicio.us I just put a bunch of tags on everything I bookmark and then it's super easy to go back and find later.
