I certainly am.  Check it out now!  I just pushed a totally new version tonight, which is a complete overhaul.  I'll be making a separate public announcement, once I get some feedback from some people and can negotiate a few things with my hosting provider.  Here's wikileak's ownership network as an example: http://blockviewer.com/#1HB5XMLmzFVj8ALj6mfBsbifRoD4miY36v  Check out the Help on the site to figure out what's going on.  Ill be adding more soon.