I did it 3 years ago. I deleted all my pictures. It's not about sales cause I am not expecting huge numbers at the beginning. I just hate submissions process. All other site are able to give you some tools to submit large batches of photos. Here is just one photo at the time. I know I can open multiple tabs but do they expect user to open 50 tabs all the time? Even if I do that i would not remember state between tabs.  It's just too much work to select category for each photo, then scroll down the page (obviously submit button does not fit on the same page) to submit each photo.

You are right. I just stop uploading as I did for BigStockPhoto. I can resume when I got everything processed here. I must invest time where there is visible result of my efforts otherwise I got bored with it.

I am using FTP. The post upload process is so time consuming.

FT is a great site. I receive a lot of DL's there, and the amount of time to process
an image is almost painless, compared to amount of time I put into creating the image in the first place.

I put 100% of my efforts into creating each image, and I pay close attention to detail.
Picking the right keywords, and choosing the right categories, then processing the image
on FT's site is for me like creating a fine "Hand Crafted" piece of art.

Cranky MIZ

I am not shooting for microstock yet. I try to upload my photos that sit on hard drive for years a collect dust. I do not want to spend to much time perfecting old pictures so at this point of time I appreciate systems which allow me to do bulk event if rejection rate is high. When I get rid of my "backlog" I will start shooting specifically for microstock. so then I might be satisfied with sites which allow me to upload 10 per week :-)