I used to do network admin for a high-street bank. One day a user called me and said he was having a problem with his keyboard, so I went to see him and asked him to describe and show me the problem. He wrote a lot of letters which would be sent out to customers, including those about charges for services. "I'm trying to get Pound signs, but I keep getting 3s," he said.
"You are holding the shift key down when you press 3, aren't you?" I said. He looked at me like I had suddenly sprouted two heads. I reached across and tapped the 3 key a few times, then held the shift key and did the same. 33333£££££
"Oh, thanks for that," he said. "You've saved me so much time and effort."
I asked him what he meant by this. Turned out he used to print the letters but before each amount he'd leave an extra space, then write the Pound signs in with a black biro.