There was a news story the other morning on NPR about the "autocorrect" feature of the iPhone and other smart phones. Texting in a hurry without proofreading can sometimes make for hilarious and/or embarrassing results. Once while lining up a job interview, I told my potential future boss, "I look forward to meeting you in prison!" I didn't get an offer.
A more recent example is this exchange from last weekend when I was showing off my new shoes to a famous Puma aficionado.