As usual in my life I have jumped in with both feet without really doing all my research.
Now I am scouring the net trying to figure out my next step. I have found a few useful sites including this page
http://www.microstockgroup.com/index.php?page=PollResults
Which has a breakdown of earnings by agency.
It is nice to see that I have been working towards mostly top and middel tier sites, with only one site I have missed.
I think, for me, at this time I will just keep to the top and middle with a few in the bottom tier. I am still submitting from my own library so I have no idea which and what will sell.
If I am going to continue with this I need to spend some time thinking about what and how I am going to shoot. An idea I have is to take the time to look at the catagories on iStock and other sites and see which catagories appeal to me… not sure if this will be worthwhile but we will see.