Hey guys. I just started learning rails and about ready to create my own web apps. So i need a facebook user data for my apps. From my understanding, i can do this in a few ways; EIther built a facebook scraper, or buying data from third party apps. I know there is a lot of free apps collecting user personal data and sell it to third party. But my question is if i would like to buy some data, where do i get them? Where do i look for apps owner who sell this data? And Is buy/selling data is illegal according to facebook tos? Thanks in advance for your answer.