Just like this blog post, Groupon phones it in.
![groupon7](http://www.rexfeng.com/blog/wp-content/uploads/2011/01/groupon7-498x540.png)
Groupon HD7 Phone Deal
19 people bought it, but it has already tipped with 20 people who bought it. Am I seeing this right?
Groupon has an incentive for deals to tip, so that they can make money – but this is still premature.
(deal via tc)