What is it about a piece of chalk and an oversized chalkboard that makes so many people want to share?
"It speaks the truth out loud," said Una Kimo Keo-Goez, professor of rhetoric at Willamette University.
She sees repeating themes, like travel and love.
"As we fear death, ultimately, we want to live for love," she said. "It shows the identity of the town. The things that are important to today's generation of people."
Lauren Lee from KVAL News visited the installation in Salem, Oregon, for a story set to air on KVAL News at 5 on February 6, 2013.