Delicious isn't completely dead it's owned by the guys who started YouTube and turned into something of a pinterest clone (which is kind of where bookmarking has gone)
The original delicious is completely dead for sure.
Yeah, I still use it. After all, I have many years of bookmarks in there. I'm happy to see it emerging from stasis now that Yahoo has set it free.
I still use it too. I like it, but it seems to be down 1 out of 3 times I try to use it, so let's just say it's 33% dead.
There are other services - like http://pinboard.in which serve the same purpose.