I think tuts are useful for pulling yourself out of a slump. To get some confidence back if you haven't made anything good in a while. They're also good for adding special effects to your arsenal. I don't think that you can ever stop learning, and people who think they hit the top and are as good as they could possibly be are just stuck up. I think if you just use it to make a tag, and then say look at my hot tag that I made; that is misuse. I'd say run through it once, and then if you want, try to incorporate something you learned from it into your own techniques and creativity.