Credit Cards and Payments

Lately, I am receiving a lot of pre - approved credit card offers, and I always turn them down since I don't think I am needing a new one for myself. I will surely be placed under a big debt if I can't control my card purchases. But my friend introduced me to authorize.net , it offers credit card processing and payment solutions. Hmm.. I wonder if i will give in, maybe if the need really arises, i know where to run to.