Vendors work their booths during the National Marijuana Business Conference 2012 at the Sherman Street Event Center on Thursday, Nov. 8, 2012, in Denver. Colorado voters on Tuesday appr

 

              Vendors work their booths during the National Marijuana Business Conference 2012 at the Sherman Street Event Center on Thursday, Nov. 8, 2012, in Denver. Colorado voters on Tuesday appr
Vendors work their booths during the National Marijuana Business Conference 2012 at the Sherman Street Event Center on Thursday, Nov. 8, 2012, in Denver. Colorado voters on Tuesday approved marijuana for recreational use. (AP Photo/The Denver Post, AAron Ontiveroz) MAGS OUT; TV OUT; INTERNET OUT