When people come to the Ref Desk wanting to use the public Internet terminals we automatically assume that they know how to type and can use a mouse. Unfortunately, this isn't always the case. A very nice older woman came in one day asking for help accessing one of the more notorious dating websites that advertise on television.
She couldn't type, she couldn't use a mouse and she couldn't read the 40-page questionnaire that this elicit site had posted online. I had to help her create an email account and spent the next two hours of my life reading her the questions and the multiple choice answers out loud. I then had to click on her answers and explain the context of what the questions were asking.
I found out things about this woman that no stranger should know. To top it all off when we were finally finished she got angry at me because she didn't have any automatic matches pop into her email.