The Leonard Lopate Show is collecting grammatically incorrect signs. Upload your photo below and you might be a guest on the show to talk about your sign.
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Steve Lagerstrom
South Ferry Terminal of the Staten Island Ferry.
Ann Sanfedele

Manhattan - Can't remember exactly - Soho East Village
Tom Adams
One last one and then I'll stop. Southern New Jersey, somewhere around Toms River, I think.
Tom Adams
East 58th Street, north side: sign says "push," but the original metal handle says "pull." (Push works).
Lisa Torres

West New York NJ. And, I wish I had a picture of it (don't) but my favorite sign ever was the specials list at a local chinese restaurant advertising "Beef With Human Flavor". Loved the place but never tried it :)
Bryan Collins

I have a blog called The Journal of Urban Typography http://tjout.tumblr.com/
this photo was taken in Brooklyn.
Maddie Taterka
I saw this sign for the Sarnath Children's Academy in Sarnath, India. The sign boasts that it is an English-Medium School which will "Make Your Child Indiffirent." Oh the irony, oh India.
Tom Adams

2/7/08, north side of West 56th Street, just east of 6th Avenue.
(hope this is the right picture; there's no way I can see it to check -- should be a sign: no appointment necessary, or some variants of the word necessary).
Neil J Murphy

On a parking garage somewhere on Long Island
El Heller

Outside an orthodox synagogue.
10 Maple Terrace, Monsey, NY 10952