I do'nt "need" you're assistants, grammer and spellinge Nazi's!

From the Punctuation-Pet-Peeves Dep't.
There's a real estate office near my house that has a huge sign reading, Come In For A "Free" Estimate!

So... I guess it's not "really" free, then?

Incorrect punctuation and grammar use really sets me off for some reason, with misused apostrophes topping the list. It's pretty amazing how many professionally printed signs have such basic grammatical/spelling errors. Apparently, I'm not the only one who notices these things:

Home for Abused Apostrophes, including this sad example. (Poor Glady! Whatever will happen to her May?)
The Apostrophe Protection Society (with Examples Page)
Gallery of "Misused" Quotation Marks
Misspelled Signs