Pinboard/Maciej bought it 3 years ago and put it into read-only mode. Details: https://blog.pinboard.in/2017/06/pinboard_acquires_delicious...
hilarious :)
But I'm bringing it back online with a pre-Yahoo design in a few days, once I finish stomping the bigger bugs.
I run a for-profit bookmarking service based off of early del.icio.us so you can take a guess as to whether O.G. delicious will be read/write or read-only.