Sorry bro's but you don't see the big picture or understand that Groupon is able to spam the shit out of their users (who are mostly all older people with money) get in the inbox multiple times a day. Get users to share that shit with their friends and have them patiently waiting for more crap. That is worth more than 6 billion when you think about how many people with $$$ that they can reach and impact multiple times a day. If you said sell for 6 bills you would be jumping off the bridge years later when you realized what kind of loot google would be making with that purchase.