Quite, and said shouters are never talking about anything interesting that you'd actually want to overhear.
Then perhaps there is scope for some FTers to meet up in the lounge and, in their suits, with their blackberries flashing on the table, discuss loudly the cash flow problems at Goldman Sachs or, if American, the fact that there are already some ICBMs targetting LON (I have it on the best authorities that this is in fact true) and perhaps some should be BHX or MAN.