Dave noted the it’s/its confusion in this NewsDay article about the 50th anniversary of Strunk and White’s The Elements of Style:
In 1918, he self-published a writing guide for his students, which they could buy at the campus bookstore. It’s main precept was “omit needless words.”
#1 by pfriedman on March 24, 2009 - 5:13 pm
And needless apostrophes.
#2 by bob on April 8, 2009 - 4:28 pm
Our local supermarket uses the apostrophe on all the signs in the produce dept. “Potatoe’s”, “onion’s” etc. It really bugs me.