I get a bill from the bank that gives me my credit card. It's one of these pre-paid cards where I have to add money to an account to be able to use. So from time to time, the bank sends me an empty "check" so that I can add money to my account to refill the credit card.

As I recieve one of the bills, I notice a little text in it that says: "Tip". It then explains that I could make a copy of the reference numbers and bank account information in my ebanking so that I don't have to retype all of this by hand everytime. Smart.

This bank is smart. It uses an interaction that already exists to teach me something. It's also super smart to put that additional pro tip on a bill. Bills are the types of document you read from start to finish to be sure you don't get fucked over in the fine print. But what if the fine print adds extra value? That's exactly what this bank does.
 
So let me ask.