Below is a big list of free blog hosts, where you can set up a subdomain or subdirectory with your username. Pick a subdomain with a keyword and start posting your links, simple as that and free.

++ Subdomains

++++ Various

http://spaces.msn.com/
http://www.blogeasy.com/
http://www.easyjournal.com/
http://www.vnunet.com/blogs/
http://multiply.com/
http://www.blog-city.com/bc/
http://www.blogharbor.com/
http://bloghi.com/
http://bloghorn.com/
http://www.blogspirit.com/
http://www.blogsource.com/
http://www.ebloggy.com/
http://www.pitas.com/
http://www.blogger.de/

++++ Wordpress

http://www.blogsome.com/
http://weblogs.us/
http://www.wordpress.com
http://www.wpblogs.com/
http://www.blogthing.com/
http://globbo.org/
http://www.theblog.cc/
http://learnerblogs.org/
http://uniblogs.org/
http://edublogs.org
http://hrblogs.org/
http://beblogger.com/
http://www.evilsupergenius.net/

++++ Blogger

http://www.blogcafe.com/
http://www.blogspot.com

++++ Other

(These seem to belong in the same network)
http://www.weblogs.hu/
http://www.weblogs.cz/
http://www.blogs.ro/
http://www.weblogs.pl/
http://www.blogs.fi/
http://www.blogs.no/
http://www.blogs.dk/
http://www.blogs.se/
http://www.blog.com.es/
http://www.blog.de/
http://www.blog.com/
http://www.blog.co.uk/
http://www.blog.ca/

++ Subdirectories

http://members.freewebs.com/
http://www.livejournal.com/
http://www.20six.co.uk/
http://www.xanga.com/
http://www.aeonity.com/
http://www.bloggercrab.com/
http://www.upsaid.com/