A little article I stumbled upon by J. Allen Brack of Blizzard on lessons in innovation that the team learned from the World of Warcraft. It's an interesting read, I've listed the 11 main points and linked the main article below that. While most of these seem like no-brainers, the way that Brack explains them in context to his work on WoW adds an interesting bit of industry depth. Enjoy!
11 Lessons in Innovation Learned from working on the World of Warcraft
1. Rely on critics
2. Use your own product
3. Make continual improvements
4. Go back to the drawing board
5. Design for different kinds of customers
6. The importance of frequent failures
7. Move quickly, in pieces
8. Statistics bolster experience
9. Demand excellence or you'll get mediocrity
10. Create a new type of product
11. Offer employees something extra
11 Innovation lessons from the creators of World of Warcraft