From the guys who brought you 6pli and other like-minded network visualization tools, Bestiario takes 6pli to the next level. 6pli lets users explore their del.icio.us bookmarks. This work, in collaboration with Harvard Berkaman, also lets users explore their del.icio.us bookmarks - as well as YouTube videos, Flickr photos, Twitter tweets, and content from Wikipedia, blogs, and other places. Items are clustered by content type and meta information. Yes, it's a whole lot of stuff in one place.
The main idea is to take a few steps away from the list and scroll paradigm - sort of like DoodleBuzz, but from a more analytical standpoint. Does it make all those personal streams easier to browse and explore than something like FriendFeed? You be the judge.