I'm one of these people who refuses to use the "M" word. It is Hemp and Cannabis. I'll still use some of the slag terms like weed, pot, etc, but NOT the "M" word. Great history lesson too by the way.
Another one I might add is to stop calling them "strains." Nobody grows strains of weed. Strain means that it is a "virus." And if you refer to your cannabis as a virus you are toxifying your weed and your conscious nullifying any medicinal value your bud or plant has making your weed do you harm instead of good. Me, I use the word breed instead of strain. What breed plant is this? You get the picture.
RE: The "M-word" Stigma: Marijuana is Bad, mmkay? "NO Cannabis" to "PRO-CANNABIS" (mini-series no.02)