What I do with my 2 credit cards is...
On one, I use for all my fuel, online, and misc purchaes... on the other, I use it for all my "recurring signup" expenses (like monthly membership fees, monthly hosting fees, monthly online gaming fees, etc...)
That way I have an easy way to keep track of various expenses, keep both cards active, and still pay them off at the end of each month so that I don't incur any interest charges.

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DarkFury's Pimptopia - Don't Hate the Playa, Hate the Game!
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