To 'Waffle on' or to 'keep waffling on' means to talk extensively with little identifiable meaning.
Margret kept waffling on about something, I counldn't tell what though.
Someone who would rather pay twice the price of a normal mp3 player of the same capacity blind to the fact that services like itunes harm the music industry.
'It's funny listening to those podestrians ramble on when they could have just got a creative for half the price'
