<prompt> Human: I have four credit cards -CardDate OpenedCredit Limit,MasterCard092010 750,AMEX1120108,500,Visa1120119,300,DISCOVER 1020133,500Should I cancel the MasterCard? Would it positively affect my credit score? I have checked into getting the credit limit on that card raised but it is not possible on the type of card. The card is through Capital One. Is there a chance Capital One will let me transfer the card number to another Credit Card brand of theirs?Thanks for any and all help.Edit: Thanks to all for the info!  <response>: NOOO!Old credit is good credit. 