Further down in the e-mail exchange, use of the word "impactful" is debated. Brians' common english errors site has an entry about it here. I've heard people say that "impactful" is a legitimate word, but I personally cringe every time I hear it. I specifically remember a KGMB ad that used it, and it really bothered me. :P What do you guys think about it?
There's also a minor reference in the comments to Strongbad's Rhythm 'n' Grammar (but they missed an apostrophe...). I don't know how many of you are Strongbad fans, but that "e-mail" is my favorite. ;)
I think spelling/grammar errors are particularly common in advertisements since the focus is on the product and not on spelling/grammar rules. But that's why they need editors! :D
And here's a random english error of the week pic: