这四个因素少了哪一项都应该是危险信号：所谓的研究报告可能真的是一个拉高出货的市场计谋。
The absence of any of these four factors should be a red flag that the so-called report could really be a pump and dump marketing ploy.
老套的股票欺诈手法“哄抬股价、拉高出货”现在又有了网络升级版，社交网站Twitter和Facebook都卷入其中，案值更是高达700万美元。
Social networking sites Twitter and Facebook were used in online versions of a classic "pump and dump" stock fraud, netting around $7 million.
老套的股票欺诈手法“哄抬股价、拉高出货”现在又有了网络升级版，社交网站Twitter和Facebook都卷入其中，案值更是高达700万美元。
Social networking sites Twitter and Facebook were used in online versions of a classic "pump and dump" stock fraud, netting around $7 million.
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