Bill Burnham, who plays a VC at Softbank when he is not playing Texas Hold'em, has a clear view of where RSS is heading and what the upcoming problems are.  Read his post RSS A Big Success in Danger of Failure (I linked the version at Seed Capital Partners' The Weekly Read because Bill's version doesn't seem to have a permalink).  His view matches mine but I think he has overlooked some hidden valleys.  Added Bill to my blogroll.