Now this is a disadvantage of popularity that Apple has to (and will have to) deal with. There is no dearth of fake apps on App Store.
This past weekend, the App Store removed a fake Cydia app. This was a completely bogus app that was falsifying and tricking users into thinking it was the App Store for jailbreak apps and tweaks.
After removing thousands of copy-cat apps from App Store, Apple has decided to crack whip on fake apps.
Many times, when an app is popular, some developers develop some app that has name and features similar to the popular app. People would be confused and mistakenly download the impostor app. However, this is not going to continue any longer.