I Know a few places on the web where you can go for your children to publish their writing. First have you thought of allowing them to create their own www.myspace.com? there they can post hourly, daily, weekly blogs. another site is also www.facebook.com . With things like this you would want to monitor your children's activity and may be place some security on their sites.

There is also a neat little site I highly recommend . Its www.testriffic.com. and www.discoveryarticles.com .When you publish your stuff its automatically copyrighted and there are places for children to write poems, stories, jokes, and create their own questionnaire to send to their friends. This site is particularly (in my view) advertised to children.

You can also create your child's own web page where they can design, talk, and create what they want to show to the world and have your friends and family visit it . You also can edit and control it. You can do this with sites like www.esitesbuilder.com.