My feeling in that there are two Forums this crash OUGHT to be reported in if possible:
1. Singapore Airlines
2. In The News
Major "disaster" things like this will also (appropriately IMHO) more than likely end up in The Buzz as well, as did Concorde crash etc.
That option, one imagines is restricted to major catastrophes like this one, not a comparatively "minor" airplane related matter - an emergency landing at Dulles or a fuel dump in London etc that involve no fatalities or major damage.
WHY some posters have started multiple threads on it
within Forums is anyone's guess. Makes it tough for Doc or others to keep them updated I can well imagine.
There was even a long thread on the SQ crash on the United Forum, which IMHO is certainly a silly place for it to be posted:
http://www.flyertalk.com/forum/Forum50/HTML/003481.html