http://www.lefkofsky.com/blog/when-you-dont-know-what-to-say
He seems both honest and it's evident he's determined and learns a lot from experience.
He's clearly the type of entrepreneur that VCs always ask for: the "go big or go home" type. Seems like his early investors didn't grasp that.
I wonder if he'll distribute any of his Groupon proceeds to some of the investors who backed him early. The ones who didn't turn on him when things went south, anyway.