JUNEAU, Alaska (AP) - Facebook has shut down pages set up by several businesses licensed to legally sell marijuana in Alaska, severing what some shop owners consider a critical link to their customers. The social media giant said its standards describe what users can post, and content promoting marijuana sales isn't allowed. The issue has popped up over the last few years in states that have legalized recreational and medical pot, often coming in waves, industry officials said. Cary Carrigan, executive director of the Alaska Marijuana Industry Association, said the industry has been forced to fight the same battles repeatedly as marijuana gains broader acceptance nationally. [continues 508 words]