Reaching the end?
As someone who in his professional capacity has been closely involved in investigations and trials of both aviation and maritime casualties, I commend (as others have) the mods for keeping this forum sane in the face of perhaps repetitive, incendiary or unhelpful posts. The breadth of expertise residing here is breathtaking and the measured and knowledgable posts on technical issues ranging from VHF coverage maps to inter connectivity of electrical systems, a/c behavior and satcoms is helpful in getting to the bottom of what is going on through rapid brainstorming and analysis (and debunking) of various theories. I have been at the centre of these storms when information is coming in thick and fast, often too fast to evaluate, and have immense sympathy for the Malaysians here - particularly when their task is made all the harder by having to chase down false leads (satellite pics) or to respond on the spot to the worlds press on the status of what turn out to be irrelevant ADs for the aircraft. So don't underestimate the value of what you're doing, and please keep it coming.
Despite all the (very harsh) criticisms of early coordination efforts it does now look as if we are reaching a point where the Malaysians are being given genuine international assistance from all directions and a picture is coming together. It's not necessarily a pretty one, but if the Americans really have (remarkably) been able to isolate the pings of this aircraft's attempts to communicate even whilst out of radio coverage, then we may soon know where it, and the poor souls on board, are.