@winkler: probably we should start our discussion for a graphical browser at
Graphical Browser :-)
My one is pretty stupid… I think we shouldn't use the html-rendering for displaying wiki-entries in WikiBrowser. A simpler rendering would be much faster (i've to wait 5 to 8 seconds to get a rendered wiki-entry). We should think about re-writing the edges of Wiki-Browser to be prepared for typed links etc.
I can imagine a lasso-like feature to do classification via the browser. just catch the right nodes and type a name for the classification.