Don't Make Me Think, Revisited

I should never have to think about formatting data: whether or not to put dashes in my Social Security number, spaces in my credit card number, or parentheses in my phone number. Many sites perversely insist on no spaces in credit card numbers, when the spaces actually make it much easier to type the number correctly. Don’t make me jump through hoops just because you don’t want to write a little bit of code.