It worked very well for istock until Getty came along and ruined it. I don't like contributor exclusivity but I do think image exclusivity is a good option. SS is doing well in the low priced microstock market but I'd like to see them expand and take on the higher priced sites as well. The main Getty site doesn't seem to have much competition and as they're worth a lot more than SS, it's obviously a lucrative market. Not sure how SS can sustain their growth without trying the higher priced market. That's why I'm still not feeling confident about the future, as the obvious way for them to increase profits when they slow down is to lower our commissions.