Stockfresh are a very new site and have not yet begun to market themselves fully. It makes sense that they would want to wait until they have a sizeable catalogue of images available before they spend a lot of money on marketing. I understand that they are waiting until they have at least a million images on their site, but so far have only half that number. As they offer download stats for each image it is possible to see that Yuri's best-selling image on StockFresh has only seven downloads. I will upload there as it may well be good to get in at the start of a new site, but I am not expecting much income from there for at least a year or so. Just FYI - my application took five days to be passed.
I have had my contributor application accepted at 123RF, but have not begun to upload there yet. I was a bit perturbed by their requirement that I agree to cover all their legal costs in the event of them being sued over one of my images. I was a bit confused by this as I understood legal liability to rest with the artist, but I am not keen to write their lawyers a blank cheque in any event. If anyone with more experience of this sort of thing wants to take a look and report back here then that would be great.