Soon BA will be reducing their checked in baggage allowance and hand baggage will only be allowed if it fits in the Hand Baggage check thingy.
US and Carribean allowances will be 2 cases at 23kgs
Europe and Domestic plus Australia will be 1 case at 23kgs
Anything else and you will be charged for it.
I have noticed that Virgin have already dropped their economy allowance on US flights to 2 pieces at 23kgs, what are the allowances on other major carriers?