The outdoor advertising company is offering everyone the opportunity to share its holiday cheer and gratitude on its billboards across America and Puerto Rico.

Throughout December, anyone who tags a photo with #ThankfulThisHoliday on social media will have their photo considered for display on one of Lamar’s 750 digital billboards that appear in 144 markets.

Lamar expects the campaign to receive upwards of 17 million impressions each week throughout the month of December.

Once people snap photos, tag them with #ThankfulThisHoliday and the photos appear on the billboards, webcams will capture the photos on the billboards and they will appear in a #ThankfulThisHoliday photo album on the Lamar Advertising Facebook page.