Ideas  I couldnt get any site to really work except the emotion one The news one was just a bunch of floaty stars and the Wiki one only showed links from searched articles main page I guess I thought it was going to show me all the places that subject appeared in all the articles of the wiki but it seemed no better than reading the wiki entry itself   Some good examples of this kind of mathematical visual mapping that you might enjoy can be found on Librarythingcom where it shows all a users books weighted by author or subject etc or those of whole communities and then the Zeitgeist This for example is the author cloud of the top  owned books by members of the librarything community Zeitgeist Heres tags etc   Also if you are building the wiki one you might want to make it uncasesensitive The emotion one worked fine although a little slow despite the fact that I have a cable connection ciao