Doh!

  Of course I'm not seeing the result immediately. It's on a 10 minute cycle as defined in the prefs table. Just got a bit confused becuase of the xmlrpc call. In the past I would have expected a post to go out to another server, make the xmlrpc call and the results to be immediate.
  This is MUCH more powerful, since it is based on rss feeds, I can flow anything I want to a wordpress blog. Snazzy!!