This looks like an article from The Onion. Alas, it's real. The headlines on this site are definitely made for the radio. Also, I love the WTF look on the kid's face. Priceless.
Maybe their parents can pick up a copy of Strunk and White for themselves. I'd offer them a keyboard, but clearly their caps do work (if only for shouting).
My brother's motto is "if it's free it's for me." I'll disagree with him here. Craigslist has lots of great things, but this is one of those "risky" purchases they warn you about. At least they're free. Hopefully, they haven't been used. I'm guessing this is the case, based on the "novelty item" and "may or may not work" comments.