“I think that you, Flash game developers, are some of the most talented and inspirational people working today in game development. Your passion for building games burns so incredibly brightly. Your ability to quickly make and distribute games is second to none. You hold immense potential to transform the future of games.” - Amit Patel from Bookmarklet

danc recommends directly charging for Flash games instead of going with ads. And there are lots of recommendations too. - Amit Patel

In the comments, Colin Northway (Fantastic Contraption author) writes: "1) You don't have to be a cockroach, be a monkey instead. While your hands are busy doing your real job write your game on the side with your feet. Then quit the real job when the money starts to flow. 2) Be a free game with pay content instead of a pay game with a demo. The culture of Flash is the culture of free. But you can be free and still charge money. If you're soft with your sell and give away alot of content up-front then people will embrace you and share you. And you can eat your cake too." - Rob Shillingsburg