Okay, this helps some. That bit about the engines transmitting for four more hours was denied early on by RR and Boeing but it still spread like wildfire.
This thing could well be on land somewhere. Note, I didn’t say it landed but simply that it could be ashore somewhere.
The key to this “mystery” is to find it, before it finds us.
I read a report earlier that said there were only two 30-minute engine data transmissions - around take off and approaching cruising altitude.
If they can determine which satellites and a time stamp, they should be able to deduce course direction.
Here is a link to the WSJ’s streaming coverage - very useful updates:
http://stream.wsj.com/story/malaysia-airlines-flight-370/SS-2-475558/?mod=MAstream