Thanks to Nathan Bingham for the link to this article at Lifehacker.
From the helpful post:
“It seems Apple added text expansion to iOS 5 and decided not to mention it. This is a great, highly-desired feature that can save you tons of time typing frequent phrases and long words. Here’s how to set it up and the phrases you’ll want to add right away.”
I think they’re right.
mgpcpastor's blog 