You know, Mark Cuban has an excellent point: Twitter may not have a business model just yet, but it can no longer say that no one’s making money from it. Over the weekend, the eccentric and outspoken Dallas Mavericks owners (not to mention a media mogul in his free time) decided to lash out once more against NBA referees. Not that lashing out is anything new for Cuban, as he’s been fined around $1.5 million in total and suspended from three games — and that was from his 14 previous fines!Shortly after a 103-101