Here are some interesting linkbuilding articles…

http://zukario-free-link-building-blog.blogspot.com/
http://www.huomah.com/Internet-Marketing/Link-Building/18-Must-Follow-Link-Building-Experts-on-Twitter.html
http://www.searchenginejournal.com/link-building-worksheets/11240/
http://wiep.net/talk/diy-link-building/indispensable-link-building-tools/

http://www.neilshearing.com/2009/09/24/excellent-on-site-link-building-wordpress-plugin/