Banksy announced on his website that he is undertaking "an artists residency on the streets of New York" this month.
He's posting pictures of his work on the website and fans are plastering the images all over Facebook, Twitter and Instagram. Though he's not providing exact locations, those who happen to come across the works are trying to spread the word.
Jennifer Hawkins, who runs a public relations agency in Chelsea, posted pictures on Facebook after finding "a Banksy sighting right out my office backdoor," on 24th Street between Sixth and Seventh avenues.
"My favourite part of the whole thing is having the little groupies standing out there," Hawkins said, referring to the small crowds of fans taking pictures.
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The Daily Telegraph, a British outlet, has created an online map to try to keep track of the images. The Museum of Modern Art posted links on its Twitter feed with a "Banksy watch" tag.
At least one of the works is gone already, altered by other graffiti artists and then whitewashed. The picture, done on a wall in Chinatown, showed a barefoot boy with a cap standing on another boy's back, pointing at a sign that says, "Graffiti is a crime."
His website includes a toll-free number and an online "Click here to listen" button with commentary on each image that spoofs the pre-recorded cellphone tours commonly offered at museum exhibits. The commentary mispronounces his name as Ban-sky and is read against a soundtrack of cheesy elevator music.
One line from the phone tour says: "You're looking at a type of picture called graffiti, from the Latin graffito, which means graffiti with an O."
His website for the New York project has posted images for every day of the month so far. He captioned three pictures posted Friday as "Random graffiti given a Broadway makeover (an ongoing series).