Rumors are circulating that a number of Chinese e-commerce IPOs (several of which may raise over $1 billion) are prepping to list in the US over the next 12-18 months. These companies are hoping to tap into investor’s interest in a large and still fast-growing market. China has the world’s biggest Internet market by number of users, and research firm Forrester Research estimates that total web sales in China are likely to triple to almost $160 billion in 2015 from about $50 billion in 2010.