Dear Facebook: I know it's been a rough couple of weeks, what with the IPO not turning out like you wanted. But you're acting like an insecure child who, having been chastised by your parents, redoubles your efforts to impress and try harder. And you're not impressing us, you're just annoying us. A Camera app ? Really? Like the one thing missing from the average iPhone user's experience was camera app #1,894,882? The App Store is littered with camera apps. Yes, yes, we know you just bought Instagram for All The Money In The World and you feel you need to play with your new toy, and that's fine. And, yes, the Facebook Camera app does let you upload multiple photos at once ... unlike your existing iOS app. Ah, yes, the Facebook app. See, Facebook, here's my real problem with the Camera App: why isn't that extra functionality built into your main app? I'm tempted to answer that rhetorical question by saying, "Because your main app is so bu...