I think this is worthy of a new thread. (Whilst it has been mentioned in a few fora, I can't see it here).
Instead of using the terrible FT search engine, a much more effective way to find something is to use Google's advance search option.
Specify the domain as flyertalk.com
Put the airline in double quotes
Use some sensible search terms.
Honestly, depending on your ability to think of sensible search terms (ie narrow enough to exclude similar but useless threads, not so narrow as to return zilch) then you can find almost anything.
Yes it is the best way by far, you can also search just the BA forum by adding the sub-forum's address ("/british-airways-executive-club") - the best way to see that sub-forum address is to view a post, rather than the actual forum page, which has a -446 on the end of the address.
It does all of the above, ie it will search both BA.com and only the BA FT forum. I realise it's a little like FT's own custom Google site, but this one searches just BA resources.