DogEared http://kidsblogs.nationalgeographic.com/dogeared/
An online book club: DogEared is a blog ALL about books.Good books, funny books, adventure books. Books about animals, friendship, pirates, faraway places... Books about, almost EVERYTHING.
Kid’s Space. http://www.kids-space.org/
This international site lets kids post their own creative writing, essays, artwork, and musical compositions. "Hop Pop Town" features an assortment of musical games.
Midlink Magazine. http://www.ncsu.edu/midlink/
MidLink is the virtual space where any student aged 8-18 can be a published author. They prefer classroom projects, sponsored by a teacher, but you can always invite a teacher to sponsor you.