Interesting article about the legalisation of Cannabis in Denver, USA. The way forward?

http://www.guardian.co.uk/society/2013/may/17/cannabis-colorados-budding-industry

Read the article above for an interesting look at the possible future for legalisation of Cannabis.  Examining Denver in Colorado
and it forthcoming legalisation of Cannabis in 2014 following a vote of the people in favour.

Will the rest of the USA follow or even the world?