Scribd is a website dedicated to uploading and sharing written content including magazines, books, short stories, and articles. Scribd is one of the most popular document sharing websites and a great tool for teachers and students to use for free!

Here is a tutorial about creating an account with Scribd and then uploading your first document.
Scribd: Login and Upload Content

Here is a review of Scribd posted ironically on Scribd.
Scribd Review