So friends..
here i invite you to share your information on sale in these 3 macro sites..  simply tell us which site out of-
             Getty / Corbis / Alamy
is selling (in average per day or per month) more images of yours now a days/recently...

Thanking you.

That would be a tough question to answer in a fair manner as Getty and Corbis generally offer exclusive contracts whereas Alamy does not.  Different images at different agencies.  Additionally, you generally work with an editor at Getty/Corbis where at Alamy - just about anything you upload (as long as it's technically correct) gets accepted.

Same business - different business models.

Thank you Ed, I see useful information in your comments.

yeah thats true Ed. Still if we just consider the number of sales in a unit time then which site sells more images of a contributor. As i said earlier if we ignore amount of income or selection procedure,quality etc. Then simply which site sells more images (of a single contributor per day o month or any other unit time).

I'm not sure how many (given the exclusive contracts mentioned above) people have the same number of images at all three. Some images from Corbis sell at Alamy. I think I read somewhere recently (on msg?) that some Getty pics are being sold on Corbis.
To be remotely meaningful, you'd need to know how many images someone had on each agency, how long they'd been up for and what sort of images were selling on each.

Well, I  have photos on sale on both Getty and Alamy. In terms of number of photos sold related to the amount of photos on sale, Getty wins on Alamy.

GETTY!  thousand times more then the other two put together, talking strictly RM here.  See for all we talk and yapp about Getty, the RM, is something they master, have always done.

Corbis is virtually non existant, just a name. For RF, Alamy isnt bad, they have their bright moments.