Don't take God's name in vain

I have always been leery of one particular cuss word. (You may call it cursing or swearing, but where I'm from we say cussing)  As long as I avoided that one word, I could pretend I was obeying this commandment.

It goes far beyond cussing, though. Taking God's name in vain is also called blasphemy, and that's just putting God's name on something that isn't God. Since I wasn't remotely like Christ, calling myself Christian was blasphemy, plain and simple. It was taking God's name in vain.

Taking something you like and calling it God is how most of us break this rule. What does it say that we don't even agree on what we don't believe in?