hm. From what I've seen? senior salaries are rather higher than the article mentions, and Jr. salaries are rather lower. (in Silicon Valley) - Junior types are still having a hard time finding work at all, as far as I can tell.

That said, I think that the key is "what skills do you have?" If you are (or have) someone good already, hiring on a apprentice can be a great thing. But you need someone at the company that is good at what you are doing. That could be you, and that could be an employee. But, for instance, I am not going to train up a new accountant. (or for that matter, a new webapp developer.)