tf_static and nodelet_manager unconnected for my Kinects

edit

I recently learned about the roswtf tool and have been trying to use it to determine where some things are going wrong. When I use roswtf after launching my Kinects in separate terminals like so:

roslaunch openni_launch openni.launch camera:=kinect_1 device_id:=1@0 
roslaunch openni_launch openni.launch camera:=kinect_2 device_id:=2@0 
roslaunch openni_launch openni.launch camera:=kinect_3 device_id:=3@0

I receive this error:

WARNING The following node subscriptions are unconnected:
 * /kinect_2/kinect_2_nodelet_manager:
   * /tf_static
 * /kinect_1/kinect_1_nodelet_manager:
   * /tf_static
 * /kinect_3/kinect_3_nodelet_manager:
   * /tf_static

Is this anything to be concerned about? I can access all of my camera streams still- rbg, disparity, and depth. What exactly does this error mean? I've tried googling and looking on here and haven't seen this error. I'm using model #1473 Kinects and Hydro.

And to add to my confusion, this is the rqt_graph: http://imgur.com/uFdxehH (I can't insert the picture it's too big)

It looks like they're connected to me.