The group's catalog lists a few other candidates.

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For example, a group of users in New York was using the app to catalog graffiti by different graffiti artists, such as Banksy, before they were painted over again.

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And Harley gives bikers every chance to swoon, with a 640, 000-member owners group, a 720-page parts-and-accessories catalog and everything from blue jeans to pickup trucks with the Harley name on it.

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In mid-September it sealed a broad, though nonexclusive, agreement with Universal Music Group to encode the label's active U.S. catalog of 14, 000 albums and 30, 000 music videos.

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