Am on holiday in the West Country, and visited a tiny museum today. There was no entry fee, but there was a sign asking for voluntary donations to be put in a box, and also asking visitors to tell the curator how much we put in. The curator also directly asked me to tell her how much I was putting in so that she could keep a proper record of how much was being donated. I said I was happy to make a donation (and did so) but told the curator I was not going to say how much it was. It made me too uncomfortable, and seemed to me to be against the principle of ‘voluntary’, which I sort of associate with being private. WIBU?