Groupon Inc (NASDAQ:GRPN) has been asked by the SEC to review its existing accounting practices and provide more financial information in future filings, reports Douglas MacMillan at Bloomberg. There have been no allegations of wrongdoing, but Groupon Inc (NASDAQ:GRPN) has come under scrutiny multiple times since it held its IPO two years ago. The company should provide more information to investors: Jason Child The Securities and Exchange Commission asked Groupon to give investors information about its policies, especially billing procedures and how the firm measures its take rate (the percentage of people who take an action that expresses interest in an…