Teens Only

Pomegranate Words Writing Contests - Offers free monthly contests for poetry and fiction for teens 19 years old and under.
http://www.pomegranatewords.com

Noble Online - Explores the writing process and provides opportunities to fine tune skills. Students may write on weekly topics, submit their work for publishing on the site, and receive feedback.
http://championofyouth.tripod.com/nobleonline/

TeenLit.com - Publishing original compositions and book reviews, with discussions, contests, workshops, and links to author home pages.
http://www.teenlit.com/

Zeen - Accepts submissions from teens around the world. Publishes stories, articles, poems, and editorials.
http://www.cyberteens.com/cr/

The Young Writers Club - A online postboard community for teens to get feedback on their writing and talk about writing in general.
http://s11.invisionfree.com/Young_Writers_Club/

FictionPress - A showcase of fiction writing and poetry, post up to fifteen writing pieces to be read and published on the web.
http://www.fictionpress.com

Write Stuff Club - Club for amateur young writers, from the age of 13 to 23, including a postboard, a regular newsletter, pen pals, writing articles, and the chance to be published online.
http://www.geocities.com/writestuffclub/

Merlyn's Pen - Features a searchable library of teen-authored works which can be read online at no charge.
http://www.merlynspen.org/

The Squid - An online magazine publishing the stories of young writers, with submission guidelines and author interviews.
http://www.the-squid.com/

Young Writers Society - Provides forums, newsletter, ezine, contests, blogs, a chat, and online resources for people aged from 13 to 25.
http://www.youngwriterssociety.com/