Interesting find for mobile/cell phone users: www.wattpad.com
It's a very small downloadable app for your phone, compatible with most modern handsets - simply bluetooth it from your PC to your phone and then you can read stories on your mobile. The text size is decent for small screens and the navigation of the site as good as it can be.
A lot of the content is user-generated, but the Gutenberg Project(to digitise books that are out of copyright and make them available free)is to put 17,000 books on the Wattpad user-generated content service.
As the mobile content news site MoCo News commented, That should improve the quality of legal content available on the service.