Based on news reports, I purchased some of the "incense" that is being sold that is basically herbs laced with a synthetic cannibinoid, structurally similar to THC, which also acts on the cannibinoid receptors. It is currently legal in most states and a drug test will not detect it.
I took about 3 good bowl rips with a brand called "cloud 9". Tasted like crap, and a little harsh to boot. However, within 5-10 minutes, I had a very strong high similar to quality bud. Its effects were primarily body focused, as opposed to mental, but it was pretty friggin good. Relaxation, giddiness, slight paranoia, red eyes and munchies. A couple hours later, I was stone sober, with none of the lingering "faded"ness regular herb leaves me with, no "down" if you will. The next night I mixed it with a little kind bud and was off my rocker.
I am not an avid smoker, though I was in my youth. I no longer have any "sources" of my own and its a pain to go through friends of my younger sister, so this stuff is perfect. Legal, reasonably priced, and available online. Anyone else try it?