Non-profit prediction markets

At Bet2give, an online electronic prediction market, anyone can “bet”
real money on the outcome of these events but with a twist – the
“winnings” go to a charity of the person’s choice.

Here is the full article, and here is Bet2give.com.  One of the "problems" with prediction markets is that they are zero-sum investments and traders cannot on average hope to come out ahead.  So why trade?  If only people really "in the know" trade liquidity will be low.  If too many "betting for fun" fools trade, the prices don’t mean that much.  You might get the right mix of informed and uninformed but who knows?  So the idea of doing these in charitable form might make some sense.