Please Google "slippery slope" before using it.
(Note: to say something is a slippery slope is to imply that it is a logical fallacy, thus illogical or not valid, but it doesn't have to be wrong. To say something isn't a slippery slope is just that, saying it is not that one particular fallacy)
On another note, it's more a parade of horrors than a slippery slope that most people use. With, of course, a heavy dose of the "Appeal to..." fallacies.
Sorry, but I could feel my Jesuit professors cringing in horror.
I feel better now...