Given the credibility of the Egyptian (Egyptair 990) and Russian (MH 370) air investigation teams, it may well be that the most authoritative facts and interpretations appear on this site or others like it. At this stage it is not possible to separate useless from useful speculation.
It seems to me that posts here after any major civilian crash fall into one of two groups: speculators, most of them well-meaning, trying to piece together an understanding of what happened as information becomes available; and scolders, who criticize the speculators for jumping to unjustified conclusions and ask them to stop doing so. Is it just me, or does the second group not sound like a bunch of Peeping Toms lecturing everybody else to put their clothes back on and pull the curtains?