Lisa, it would be highly likely, had you concentrated on IS, you would have had a lot more images. You would be able to upload more with your huge capacity to making quality images.
You're very sweet to say so. I wish I did have a huge capacity to make quality images. I hope my images are quality, but I know my capacity is more modest
.
This is one thing I can say for certain. Unlike most indies, perhaps, I have always produced exactly as many images as I am comfortable with, which is roughly 100 images a month, give or take. That is well within my upload limits as a BD on Istock.
I am completely in awe of people like Sean Locke, who as a one-man-show can produce a couple thousand brilliant images a year, but it's not a pace I would be happy having to keep.