Recently, with BA changing their front page, they asked for feedback. Since I had encountered a problem and had to revert to their original site - I thought I'd be helpful. I took a screen shot of the problem and highlighted it. Then emailed it with a note. Had I have received even an automated acknowledgement - I would feel the effort had been noted. Consequently, I shall never help BA again.
That might seem petty to say 'never' but it is just another in the string of events when corporates ignore you and I have long given up wasting time more than once.