The Bulletin of Cannabis Reform is one of those journal titles that leaves little doubt about editorial direction. Hey, we're cool with it! Still, data is data.

In its newest issue, the Bulletin includes an interesting review of the relationship between marijuana arrests and marijuana use. The apparent bottom line: There is no relationship. Which, if true, might be something lawmakers would want to know.

Marijuana arrests increased 150 percent between 1991 and 2009, researcher Jon Gettman found. But during the same period, marijuana use in the United States remained largely unchanged. Among many other findings, Gettman makes an intriguing argument from economics: penalty structures that essentially decriminalize pot in small quantities essentially drive consumers to make many, small purchases. Gettman says this "works to prop up the price of marijuana and benefits the illegal market."

Conduct your own evaluations, by consulting the data-rich Marijuana Policy Almanac. Seriously, there is some fascinating state-by-state breakdown here.