I agree with you in the general sense. However, the credit card entry is nice. It doesn't change what you'r typing, it just adds extra information (spacing, which card type). Trying to type in credit card info w/o the spacing is really annoying.
I beg to disagree. It's just a number, like any other number. And not even that long, really. Instead of adding something automatically, it would be much better to allow users to put space if they wish so and remove it when processing. Everyone is happy and when users see space there actually is space there.
