I have a few friends who use Stumble, and I noticed that Stumble now includes a tagging feature. I have to say, though, that I never got that into Stumble - something about their algos I suppose (or maybe the decidedly retro interface) just didn't jive with me. But, it certainly serves a purpose that Del.icio.us doesn't quite manage to accomplish... but why not?
There is, of course, the Random page on Delicious, but it's totally random. What they need is a personalized random link page that pulls a random link stumbled recently by someone else who labeled it with a label you have used. Make a bookmarklet for it, and voila, you have yourself a solid StumbleUpon replacement.
So, what say you, Del.icio.us Masters? Have I stumbled onto something good here? Or is this just not feasible from a performance perspective due to the high volume of tag searches?
Update 2/8/07: I sent this to the feedback address for Delicious, and got a reply back stating, "Basically, what you’re talking about is showing users links based on things they’ve liked enough to tag in the past, right? If so, we’ve already got something in mind." I can't wait!