Playericious is incredibly simple to use: specify a tag for which you'd like to see pages, pick delicious or magnolia as the source, and hit go. Then just sit back and watch the most popular pages stream by.
There's something strangely appealing about watching playericious do what it does. Part of it is the ability to focus the results on what you'd like to see, and part of it likely has to do with that "I wonder what's coming next?" appeal of services like StumbleUpon. Well, and then there's the fact that it's just so easy.
The one drawback is that playericious uses frames. That means that any time a page with a frame-busting script comes by, the service throws an error and stops working. I only encountered this issue a few times. But it does happen.
The developer claims that the service isn't terribly useful. But I'd beg to differ. After a week of saving new bookmarks, I found it incredibly useful to point playericious at my account and let it run - simply to refresh my memory about what I had found.
Take a few minutes to test drive playericious. I'm sure you'll find something interesting to do with it, too.