If you have 20x unique 600 word articles now (written for your niche), how would you use them? Here's how I would use them...
1. Put 10 articles on 10 different social media sites like Squidoo.
2. Buy a keyword-rich domain, install Wordpress and then put the other 10 articles on this blog.
3. Use the social media sites to point links to these 10 posts.
4. Use this unique site as a link powered source to boost the ranking of my main site.