I was reading the idea/suggestion thread, and I saw the dragon trading idea, to be able to trade dragons with neighbours.
But then I thought: I can't buy Gold (because I don't have a creditcard) and it would be awesome if you could sell dragons for gold or coins. Like a market system.
You can put a dragon up for sale for coins, food or gold.
This would be an ideal situation for people who don't have creditcards to get gold aswell!