Popular enough that food coloring dyed blue meth has shown up in the streets [1] despite the fact that there is no actual chemical process to make blue meth the way it's described in the show [2].

This is interesting because it means that meth producers and drug dealers are savvy and using pop culture to drive marketing/sales decisions despite the fact that the product is unambiguously worse in quality/purity (probably implying something about the level of "research" that end consumers use).

Drug dealers and consumers are using Breaking Bad to drive production and purchasing decisions:

So the question, in several parts:

1. How has the popularity of Breaking Bad impacted the prevalence, popularity, price, consumption, availability and arrest rates for meth?

2. What do these numbers look like:

(A) over the 6 year lifetime of Breaking Bad, (B) by geography (are there bigger spikes (if there are spikes) in New Mexico vs Massachusetts) (C) by demographic

[1] http://www.telegraph.co.uk/culture/tvandradio/10338805/Breaking-Bad-facts-30-things-you-didnt-know.html [2] http://www.salon.com/2013/08/22/so_what_if_pure_meth_isnt_really_blue_partner/