TheStreet's Jim Cramer says investors are "gaga" overJD.com because the company looks a lot like Amazon and it knows how to deliver products in China. Cramer says he likes Vipshop Holdings because it makes money, but he thinks there is room for companies that lose money in this market because investors are crazy about China. Cramer warns investors to watch out for Alibaba, because when it IPOs, investors will sell JD.combecause Alibaba has much better growth characteristics and profitability. Cramer says he never gets in the way of Chinese enthusiasm - it happened with Baidu, it will happen with Alibaba. Cramer says let the stock go higher, then take a profit.

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