Infrequent blood donor here. Universal donor O-.
Just been offered money to donate my blood. Very unusual and very strange. Normally just a reminder and a cookie. Received notice asking me to donate along with a raffle for $10,000 from local blood bank.
Been recently receiving more reminders about blood donation.
I used to donate regularly and there were always raffles or some such thing. When I quit they offered gift cards and other monetary incentives but I was done with them but they still call and email.