But I believe it is still a solution for a very persistent problem, and as long as it solves it, it will be able to survive very well in today's web.
The main problem is the fact that they are doing a crappy job at releasing. I don't think they planned this very well.
The old delicious had all the features I ever wanted it for. When the "sunset" leak happened, I immediately set up accounts at pinboard and trunkly but continued to bookmark on delicious and let the others pull in from my delicious RSS feed.
Now that the RSS feed is gone, I will start bookmarking on pinboard directly. Pinboard was built to emulate the classic Delicious anyway, and has tag suggestions.
The missing feature is the equivalent of delicious.com/tag/whatever, where you would see a ranked-by-popularity list of URLs that were tagged "whatever". That was always an excellent fallback/discovery tool when I didn't get good search results on Google or a vertical search engine.
EDIT: delicious RSS is back, actually. I guess enough people emailed about it.
For those that haven't got around to using Delicious, can you summarize why?
I was quite shocked about this condition when I read it.
AVOS is ultimately at fault here. They didn't want to hurt the feelings of the Delicious old guard, so they made it sound like everything was ok. But everything -wasn't- ok with the product those users fell in love with, it was being obliterated. The best thing AVOS can do now is help users come to terms with the present reality.
Ultimately, the re-launch was the right move - the delicious of 2004 cant survive in today's web. But AVOS's communication around the transition just wasnt frank enough. They should have just held a funeral.