Not related to your original question, but I thought it worth mentioning:

I noticed your link to pbskids.org from your "under 18" link and thought that was a "cute" way to exit the site (as if they would actually click it). However, I would think that pbskids.org would be appalled to have you link to them. I would expect that you will hear from them and they won't be happy.

I'm not the brightest bulb in the box, but from what I've learned over the past few monthes - that's trouble. I believe it actually will hurt both your SEO efforts and those of pbskids.org due to the irrelevancy of the link.

Do others have thoughts regarding this? Am I all wet?

Constructively,
Rob