I'm very much into systems thinking. My only beef with it would
   be the use of Pagerank algorithm but it's not a bad start.
   Certainly better than most of whatever else is out there.

   But... it suffers from a common problem many of these systems
   have.

   They're not crash-proof. In systems that are tightly integrated
   like this, failure in one part of the system can lead into
   cascade failure.

   Concurrent processes must be fully independent so that a failure
   of one process does not interfere with other concurrent
   processes.