The ability to submit my own photos rather than pay an artist or photographer as I would do otherwise was very helpful! It's not always easy being self employed so having it set up quickly made me feel more comfortable about starting out without any previous experience of using this type service - especially at first when you're still learning how things are done here compared your old ways back home (where we weren't even allowed access).
As far away from traditional art galleries/stock agencies go there isn’t much that could be improved upon but maybe adding some sort if portfolio section where people can see examples by other artists who have used crestatck before? We've been able build our business off one anothers success which has meant all parties involved really understand what each others needs better now then ever previously through regular use over time since launch date almost 2 years.