It turns out that Delicious has revamped its functions somewhat. I haven't had a lot of time to investigate, but the main thing that strikes me thus far is that, for those of us who try to bundle our tags, the new system isn't very friendly toward non-bundled tags. They just don't show up anywhere unless you go into the tag-bundling area. You have to go into a specific bundle to actually see all the tags you've ever used, and you have to tell it show you whether tags are used in other bundles.
I do often put a tag in more than one bundle, but I am most concerned to get the tags into at least one, because formerly the unbundled tags were all down at the bottom of the page and I had to scroll down to find them. Now it's even more vital to get them into bundles, because they just aren't anywhere to be seen under normal circumstances.
This is irksome, because while I do go in every few months and update the bundles, even when I've just done it, there are quite a few tags that just don't have a bundle. What am I to do with the tag "friends" for instance? Stick it in the "Practical" bundle? That seems a bit weird. "Fun"? Kind of limited. What about "hypnotism," "looting," "interviews," and "contests"?
Furthermore, certain tags show up as unbundled until you go to the bundle they belong in, with the intent of adding them, only to discover that they really are already there. I am not happy about that.
It looks like the display for tagged sites might be better than before, but I didn't really have a strong opinion on it previously, and I'm not sure I have a strong opinion on it yet now.
We will have to see how this all goes.