The Blank Slate: Do You Sell Stock Graphics?

As designers in this economy it only makes sense that we do all that we can to supplement our income between client projects. And luckily, there are plenty of opportunities out there for us to do that. It could range from selling stock photos and graphics, web themes, templates and mock-ups, and even video and audio files. The possibilities are endless, and I know that some have even built a steady income and began making a living selling stock art exclusively.

Do You Sell Stock Graphics?

I'm curious to know, if you've began selling your art as stock. What has your experience been? What do you sell? How long did it take you to get started? Let the community know your thoughts on the topic and if you think it's a viable means to supplement a designers income.