Day 19: What has been the worst resource?

This post is part of a 31 Days of Secular Witchcraft series in which I answer questions about my own personal views about magic and witchcraft.  I urge you to answer the same questions, found here, on your own blog.

There are too many to name.  Seriously.  There is a ton of information about witchcraft out there, and I can glean something or be a little bit inspired from even the weakest source, but there is very little on which I can give an unequivocal stamp of approval.  Trashing people by name is not my style on this blog, so I will just say be careful of everything.