If you use credit card responsibly, is it better for your credit to have one or two?

I’m a college student and I’m trying to build my credit. I currently have Visa student credit card at about 12% annual interest, no annual payments, and a limit of $1000. I have been using this credit card responsibly for a year (it seems so easy with online payments!) Does it matter how high [...]

How come you have to pay at least $1 for online credit card payments? And why only 1 payment every 24 hours?

Why is it that credit card companies will not accept a payment of less than $1 and you can’t make more than one payment every 24 hours? Is someone out there trying to pay their credit card bill a nickel at a time? And what would happen if they did? Inquiring minds wanna know.
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