However Delicious as a service hasn't really changed much since it first started. There was a re-design about 4 years ago, I think, but nothing really since then. Yahoo announced earlier this year that they were going to close it or sell it, and I was very pleased that two of the founders of YouTube had decided to buy it. Meanwhile I've also started to use other services, like Pinterest (for visuals) and Instapaper (for long articles).
Today Delicious introduced the new version. It's a lot more visual, and they're encouraging you to make 'Stacks' - essentially playlists of items. Here's a video to explain how it works.
However, in doing this they seem to have messed with some of the core features, and the more visual look is making it much slower.
Here is some feedback I've left on the YouTube video:
It's a lot slower than it used to be
It doesn't seem to auto-fill tags when I save things any more
The Chrome 'Save in Delicious' plug-in doesn't seem to work any more
The tags need to be alphabetical
Have you deleted tags? I'm pretty sure you have (or maybe they're not all showing). For example, I have the tag SanS which I used to bookmark good places in San Sebastian. It's still there (luckily) but it's not showing on the right hand side.
It would have been nice to have had warning of a switchover date, so that I could have exported everything just to be safe
Most importantly, how to I get to the second page of my links? E.g. I have a 'Page 2' option at the bottom of my main page, but not at the bottom of my page with 'Mobile' tags, for example.
(I've also heard that tag bundles (collected groups of links) have been deleted, but thankfully I never used these)
Here's an interview with Chad Hurley in AllThingsD - but it's pretty clear that the interviewer isn't a Delicious user, because none of these points have been brought up.
Update - I've now tried creating a Stack - this one is called FMCG Examples. It's pretty good, but it's quite hard to put your old links into a stack. It's as if they designed it for new users rather than the existing users. Also, why can't the URL be delicious.com/digitalnews/stack/FMCG_Examples rather than http://delicious.com/stacks/view/QpyhvK#m=full