If you want good credit, don't open new credit cards up just to save a few bucks. Instead, buy a card with good terms, hold a balance occaisionally, and pay in time. Like others have said opening new cards reduces your score and the open line of credit from additional cards also lowers your score.
You can get a card with reasonable interest, $50 rebate and cash back on all purchases. Or you can get this Sony card with terrible interest, $100 rebate and points rewards you can only use to buy from Sony. It's your choice.
I have owned 3 credit cards in my life and I have an 800 credit score. I didn't get such a high rating by getting a new credit card every time I wanted to save a few bucks. And I have gotten hundreds of dollars in cash back over the years from my purchases. Just from paying my rent I get nearly $100 cash back each year.
Anyone can guess. It takes no effort to throw out lots of predictions and have some of them be correct. You are not and wiser or better for having your guesses be right. Even a blind man can hit the bullseye.
