This is my stock photography sales statistic for May 2010. You can find a complete list of stock photography agencies that I work with here.
These are for me the best 4 performing stock agencies for May 2010:
Yes, Zazzle is not a stock agency, but many stock photographer use their stock images there to create Zazzle products. I had some sales in January and February there with only a few images online. Then I was reading that some of my friends started to have more sales there. So I decided to start uploading to them. With first no sales in March and April, May turned out to be a good month. The next few month will show if my time was good invested. Overall May was a good month with an increase of 21% compared to April. May was the best month ever for iStockPhoto, Vivozoom, Alamy and Zazzle