Autocorrect mistakes abound, but have you ever made the errors yourself, such as typing the word buy when you meant by? Studies in Computer Mediated Communications have linked this phenomenon to the way we process words phonetically before typing...
spave v.— «You can come down and we can go laugh at all the people who are “spaving” as they call it. “Spending + Saving” I save a lot. I don’t buy!» —“Re: Any DC frugalites?” Usenet: misc.consumers...

