Seeking Grammar Police Ruling - Typo's

[Carol]

Steve wrote:
>
> Got into a discussion at Orson Scott Card's Hatrack forums. We were
discussing a completely different subject and at the bottom of my
post, I added that I was going to go back and fix the "typo's" in my
previous post.
> 
> Well that certainly opened a can of worms. Some one made a cute
comment about biting their tongue over my use of "typo's". <snip>
> Now, without a doubt, 'typos' is the more common usage by a wide
margin, but it being common doesn't make me wrong.
> 
> Anyone care to weigh in on whether "typo's" is or is not a valid
contraction of 'typographical errors'? ...Carol?

Carol responds:
Sorry, Steve. "Typo's" is not a contraction for "typographical
errors." It's the possessive form of "typo."

BTW, I'm going to be offline for awhile. Minor computer problems that
need to be looked at before they become major. I *may* be able to
borrow a computer, but, if not, I won't be posting for a few days.

Carol, not sure which is worse, car trouble or computer trouble, but
one following the other is a major nuisance!