Hipstergrammers
Should I consider Objective-C a weird, archaic language, a wonderful revolutionary tool to create localization-based social apps for iOS or too mainstream given the success of Mac OS?

It’s a weird, archaic language for making location-based social apps for iOS. Since it’s so mainstream right now, you can only use it if you pretentiously brag about how you used it years ago to build apps for your TI-83.