In the arts they call it plagiarism, in business they call it competition.

I didn't realize how hard it was to run a small business.

If I ever thought I wasn't the right guy for the job, I'd be the first person to fire myself.

I just like to build things and do things.

I never thought of myself as an entrepreneur before I started this. I just like to build things.

After four and a half intense and wonderful years as CEO of Groupon, I've decided that I'd like to spend more time with my family. Just kidding - I was fired today.

Once you have something so deeply infused in your culture and your brand, it would be very difficult to reverse that inertia if you wanted to.