I'm not sure the app is (was) a pure image browser. The dev said: "There is currently over 100,000 pics spread between 15 categories with much much more coming

I'm not sure the app is (was) a pure image browser. The dev said: "There is currently over 100,000 pics spread between 15 categories with much much more coming soon." The "categories" thing makes no sense unless the app was able to associate specific sites/boards with certain categories ("blondes, brunettes...") somehow, either by linking to the boards directly or by detecting a "known" categorized board/subboard when the user browsed to it. Bottom line is that if there were any nudity/porn sites included in the URLs that enabled the "category" feature, the takedown was probably justified.