Actually, Greenman has a point. Search witchcraft on the internet and you'll find one "authority" who traces it back to the Bronze Age. Another proclaims that witchcraft started with the Celts. Can any coven today trace its roots back more than ten generations? And who made the rules?
When did the Rule of Three come into acceptance and why and by whom? Who formalized the ceremonies? What got left out in the process? What were the Christian influences?
As with all modern belief systems, witchcraft has evolved. Just imagine the nonsense that little girls who watch and believe Charmed are practicing and passing on. Imagine the influence Harry Potter is having on the Craft.
Then remember what started this thread. A company who sells everything from face creams to fishing rods is offering membership in a Witchcraft Club with two free spells as a come on.
By the way, Alba, I want those spells!