After I stopped worrying about protecting my work, or ideas about my work, etc. I had a very pleasant surprize. I found that the more I shared, the better it was. More feedback, more awareness of my work, more opportunity to discuss my ideas, and that makes me happy. Mind you, I'm not in the million dollar club, so I admit I didn't have to worry as much as the people who created Scrabble!
Here's a current commentary on the Scrabulous scandal which suggests that Hasbro and Mattel should be happy too: