Project Gutenberg has opened their new online, self-publishing portal, through which they "encourage the creation and access of copyright protected eBooks. In general, this center is focused on the author's who wish to share their works with readers."
Moreover, the portal will allow self-publishing for books presumed NOT to be in the public domain, but whose copyright holder is willing to allow limited access to readers for personal study and non-commercial sharing. Users must register to upload books to the site.
The goal of Project Gutenberg Self Publish is to have a million eBooks on the site by 2012, with as many as 10 million by 2021. The site already has nearly 700 titles as of this writing, and knowing the scope of the self-publishing world, believe Project Gutenberg will have no trouble reaching its goal.