<prompt> Human: I have one credit card which I opened in October of 2013 that I use on a daily basis and pay off on weekly basis so I never carry a balance.I have a good credit score that Id like to maintain or improve. Will opening another credit card negatively affect my credit score? If so, will it end up helping in the long run as long as it is used responsibly?  <response>: Will opening another credit card negatively affect my credit score?Only for a short time. And if you have no plans to apply for any loans in the few months after, any drop in credit score is compleltey irrelevant. will it end up helping in the long run as long as it is used responsibly?It definitely will. Using credit cards responsibly is the best thing you can do for your creditwallet. 