I found it painful to see these images being sold for just a 16% return which sometimes equated to as little as 13c in commission (other indies have reported receiving just 9c in commission for some sales *edit - I have since had a sale for just 10c commission!*). I can just about stomach it with some of my old junk images, but not my best stuff, such as it is. I also did not want to support ThinkStock (against my will) and removing these images now was the only way to prevent them being mirrored onto ThinkStock's site. I see this site as a direct competitor to Shutterstock, which I have a good relationship with and do want to succeed, so supporting the competition would seem a foolish thing to do.
I have also stopped uploading to some of my agencies. 123RF recently announced a cut in contributor's pay for anyone below a certain threshold of portfolio size. This ensures that all new contributors will be on the lower commission rate and will stay on it, regardless of their portfolio size in the future. I say 'announced', but by this I mean they emailed a couple of contributors and left them to pass the good news on to the rest of us. No announcement was made on the site at all. I was not at all happy with the way that they acted, but as they have also rejected a vast number of my images for nonsensical reasons, I am happy to drop them from here. I will leave my images there for now, but may well delete them in future. The same goes for Crestock, who reject a lot of my images but hardly ever sell any either. I can understand Shutterstock being picky - they can afford to be, but when 'lower tier' agencies turn their nose up at images that have been accepted at 'top tier' agencies I feel it isn't really worth the effort. For this reason I have also stopped uploading at Photodune for now. A lot of indies have reported high rejection rates there, with the feeling being that the 'out-of-house' inspection team are not as sophisticated as they might be. I have certainly had a lot of rejections there, which is a demoralising process. My sales (which started reasonably brightly) have now completely dried up and I am left wondering if Photodune were a bit of a flash in the pan.