Myths abound when it comes to social media marketing. There are plenty of tales of woe – and no shortage of advice. You have to be “real”. You have to make it your second career. And so on. If you follow the conventional wisdom that’s tossed around in the social media marketing world, you’d spend so much time on Twitter that your core business would suffer visibly. And when the revenue dries up, you’re left with nothing but the opportunity to gripe about it in 140-character bursts.