So, this posting is not strictly library related, but it is definitely school related and teenager related.
Coffee is delicious and maybe not SO nutritious, but did you know that there is a science associated with it? If you can't survive your day without coffee, you should check out this site.
In addition, there is this really cool site like myspace, but for books. You can go on the site and make a list of all the books you have read and write reviews for them (or comments, really). As a librarian I fully endorse it. Add me!