A fairly new site to write articles in
http://www.oondi.com/
It's still in Beta, only about 35 members.
go to
http://www.aboutus.org/ type in your site url and fill in any additional info.
qassia is another for articles. They call it Intel. You have to be invited at the moment. here is a link
http://chopper.qassia.com/
it is being indexed
These will help with back links.