http://thegazette.com/2011/12/16/iowa-officials-warn-parents-about-synthetic-drug-trend-among-teens/
The Cedar Rapids Gazette published this story on the continued use of K2 and other synthetic substances.
We have continued to see use in Johnson County, but mainly with people under probation. I have not yet seen a new possession charged filed for these substances, even though mere possession is illegal and carries a GREATER penalty than possession of marijuana.