Colorado's marijuana law has brought tourists and tax revenues

http://www.desmoinesregister.com/story/opinion/columnists/rekha-basu/2014/08/17/colorados-marijuana-law-brought-tourists-tax-revenues/14178219/ DUE 1 September 2014. What are the advantages of creating a legal marijuana market in Colorado? What are the disadvantages of creating a legal marijuana market in Colorado?? What regulations have been created for the marijuana industry??? What is the major concern about the legalization of marijuana as noted by the New York Times??