For me, college loans are a nightmare in themselves. So why add the debt from a credit card on top of that? most credit cards have ridiculous interest rates, especially the ones marketed to college students. I often see credit cards with well over 20% interest rates, which is MIND-BLOWING! If you don't have the money to buy something, DON'T BUY IT! It's that simple!
Avoid getting into debt during college. Is getting a new stereo now worth not being able to buy a new car later in life because your credit is horrible? Absolutely not!