I just noticed this thread was started a year ago, but what the heck...these are my numbers from May 2007.
Shutterstock = 40%, up 21% from previous BME (December), 1 EL (4 in March)
iStock = 31%, down 12% from previous BME (March), 3 EL
Dreamstime = 12%, up 7% from previous BME (March)
StockXPert = 6%, down 44% from previous BME (April)
BigStock = 5%, down 14% from previous BME (March)
123RF = 3%, up 144% from previous BME (November), 1 EL
Fotolia = 3%, down 48% from previous BME (March), second lowest earnings per month in a year.
Overall BME by 6%CanStockPhoto, LO, FP not tracked by percentage of sales (percentages limited to sites where I receive a payout at least every other month).
CanStock = up 135% from previous BME (November); due in part to uploading 500+ photos and their discounted credits promo
LuckyOliver = up 14% from previous BME (March)
FeaturePics = down 98% from previous BME (February); no sales since March 1; earnings are from referrals only