i don't understand why all the confusion about turning down 5.3B.
at the rate groupon is growing, there's a great chance they'll be able to sell for 10B in under two years.
from:
http://techcrunch.com/2010/05/02/teardown-groupon/
How Big Is Groupon’s Business and How Fast Is It Growing?
"On April 16, 2010, Groupon had 31 deals,
45,910 paying customers and sold nearly $1.3 million worth of coupons. This was a significant increase from the 17 deals,
10,018 customers and $240,000 in gross sales it had on November 6, 2009. Along every measurement I looked at—the number of deals /day, average customers/deal, average deal price, average gross revenue/deal—Groupon is seeing tremendous growth. Of particular importance is that its average deal price is increasing (from $24.65 to $44.94) and it is rapidly opening up new markets."