M-39 is a strain but the others sound made up. M-39 is a fairly popular commercial weed strain in Canada I think. I'm a bit dubous about strains obviously if a plant has good genetics its going to help a lot but I don't like the idea of the sort of Branding it gives to Cannabis. ie people going to amsterdam and getting White Widdow cos its the only 'brand' they have heard of. I find it sad cos stoner culture is supposed to be anti-materialistic.