Guten Tag breaks up the tagosphere into 6 tabs:
Posts (aggregated blog posts from the Blogospshere)
Bookmarks (aggregated bookmarks from various social bookmark services)
“It’s nice to see a tag search where so many things are available, but I’d make two big changes. First I’d add more sources. They’re popping up all over the place so that shouldn’t be a big deal. Second I’d try to mix the results somehow — relevance? Date of posting? Random? Right now it’s too easy to look at the results and say, “Oh, it’s just del tags” or Flickr tags or whatever, because you’re not going all the way to the bottom.”
I totally agree, as it is one step forward over some of the other services in that results are all in the main body (not just in separate boxes), but now let’s try mixing the results for relevancy
…then the next step is to be able to full-text search within each of these tabs (the human-indexed web)
You can type in a keyword or choose from the tag cloud…example.