Free Image Hosting & Earn Money?

Imagegravy is a free service that allows its users to upload and host images on its servers. What makes it different from the rest? It has a unique revenue sharing model that compensates users for directing their friends and family to see their hosted images. When a member hosts a gallery, they can then show this gallery to others. Each time this is done, the member is paid.
I don't have any experience with Imagegravy, and I really don't know how it working. More detail you can see its website.

Imagegravy是一個免費的服務網站，它主要是提供用戶上傳照片到它的服務器上。它與其他的圖片寄存網站有何不同？它能從這個圖片寄存網站得到返利，也就是說賺錢。當用戶建立了圖片主頁後，每次他人的點擊浏覽會帶來回饋。
我沒有任何使用Imagegravy的經驗，並不知道它的運作方法，如果你有興趣的話可以直接上它的網站了解詳情。