PhD, Startup, or Career? 
huhtenberg: As others said - don't do PhD right away. Take a break from the school and have a closer look at other options first.For one you may discover that you can do cooler stuff in less time and to more satisfaction. For two you may notice that not all PhDs are created equal.I had a choice of doing PhD when I was graduating (that was in Eastern Europe and it required getting an approval, a recommendation and god knows what else, so it was more of a privilege than an opportunity) and decided not to. Now, looking back, I'm pretty sure the stuff I worked on in a past 10 years would easily get me a PhD or two. It also earned me enough money so I can actually go back to school and do that PhD ... only if I wanted to :)