ARI SHAPIRO, BYLINE: NPR's business news starts with Groupon clipping its IPO. The online daily discount site Groupon is scaling down the size of its initial public offering. The Groupon IPO could be one of the biggest Internet IPOs in years. But recent stock market volatility and criticism of the company's accounting methods have changed the plan a bit. According to various reports, Groupon is now limiting the number of shares it offers to the public. The IPO was originally expected to value the online coupon site at around $20 billion. The smaller IPO will now likely value Groupon at around 12 billion. Transcript provided by NPR, Copyright NPR.