Speaking of interest rates, I'm not sure how Groupon's model works, but it's possible that their payment terms let them generate interest income on all of the r

Speaking of interest rates, I'm not sure how Groupon's model works, but it's possible that their payment terms let them generate interest income on all of the revenue. If they continually generate 30+ days of float, that's potentially interesting, especially if rates go up; although, I doubt it would register in this valuation.