Simply upload your photo from within the app. This will then appear on other peoples "Photo Feed". Anyone can buy you pictures, when they do you will earn 10% of the sale of the picture. You will also get money when you upload them too!
When you buy a photo, other people will be able to see that you have bought it. Should they outbid you, you will earn the cost of that picture, with is 20% more then what you paid for it!!
Whats the point? Well why dont you see if you can Own all your friends.. your partner.. your family?! Search for them and see what pictures they have uploaded... Or become the richest user and top the leaderboard, possibly upload the picture that becomes the most expensive!!!
Whatever your drive is, its fun and great for seeing how much your pictures are really worth ;)