It takes some experimentation to figure out what people like and don't like.
I just like to build things and do things.
I'm weird. But I'm a pretty serious person.
I think the big thing about Groupon is just people had never seen anything grow quite so fast.
If I ever thought I wasn't the right guy for the job, I'd be the first person to fire myself.
Local commerce, without question, will be one of the fundamental use cases enabled by mobile devices over the next several years.