Hah, CardMunch didn't cure cancer, but here's true story that people could relate to.
I remember one day this beta user decided to send in a bunch of cards for process. It was nothing out of the ordinary except the stream of cards just kept coming. By the end of the hour, he had sent in 470 contacts. We completed them fairly quickly, but out of curiosity we calculated exactly how much manhours we spent processing his cards.
19.93 HRs.
Arguably that's how much time he saved, because he didn't have to do everything on his own. It was pretty sweet.
So maybe the title of the story would be: "how we saved one user 19.93 hours in one Friday afternoon"?
Is that something you can relate to? :)