LivingSocial closes $176 million round. How far off is an IPO?

We reported in mid-November that the company was looking to raise $200 million at a $5 billion valuation. Investment bank JP Morgan, Lightspeed Ventures and all participated in the current round. One year ago this week, Amazon invested $175 million in LivingSocial. The daily-deals site has raised a total of $808 million in private funding and has spent $353 million to buy companies such as, TicketMonster and Urban Escapes. The current investment values the company at $6 billion.