If you are doing it alot if can hurt your credit. Each time a person opens a card it is a small ding on your credit score. But from knowledgeable people have told me is that it is not a huge impact on your credit. Figure maybe 3-5 pts down if you open a card. so unless you do it 10x a year it wont hurt your credit much.

As far as closing it our right away, that wont hurt because will have no credit history with the bank. BUT it will help your score go back up if you use the card a little. Just spend like 50/month on it and then pay if off. That will easily make your credit score go up.

Yes – all credit checks and credit cards shows up on your credit history – to many hits and it’s a negative toward future credit!@~

Every time you apply (sign up) for credit of any kind, they can run your credit check. Too many credit checks within a certain time period will lower your credit score. “Too many” could be as few as 3 in three months.