A billboard in downtown Portland that suggests pot is safer than alcohol is drawing attention, especially from recovering addicts at the nearby DePaul Drug and Alcohol Treatment Center.  Some clients of the center feel it’s encouraging them to  use marijuana – as they are trying to get off of harder drugs. Roy Kaufmann, with the Marijuana Policy Project, sponsor of the billboard, says that a Coors Beer ad was on the building previously. Kaufman's group is trying to legalize marijuana in Oregon.  The billboard will remain in place through the end of April.