I was uploading 50 images to shutterstock today.  I uploaded the first 20 via ftp, and submitted them.  Then waited while the ftp program uploaded the next 16.  When I went to click on the 'waiting to be submitted' button, i noticed that the 'waiting to be reviewed' amount was 0 and not 20.  I thought there must be a problem, that they didn't register my images..... but nope, they had allready been reviewed.

Nice work shutterstock.