Jeff,
I think you provide valid examples for the use and benefit of PDA's in education. I think you could make your page look neater/nicer if you did not have all of those websites listed within your information. For example, in your first paragraph at the end you have the website written out and linked for the definition of PDA, why don' t you use the words Personal Data Assistant as the link to that site instead of having it at the end of the article.

 out of  found this valuable. Do you find this valuable?