Gleason on Charity Auctions
There is a tradition of auctioning original works of art donated by  artists to raise money for charitable causes. There are many good causes  that hold such events. No matter how good the causes, though, I have  come to the conclusion that artists must stop donating to every single  one of them.
  Don't ever donate your art to a charity auction again. Half a century  of charity art auctions have changed the way collectors buy art. These  fundraisers have depressed prices of art across the board and kept  artists in a subordinate position that has no career upside or benefits.
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